THE SWORD AND THE STRANGER
Nation, Law, and the Scriptural Duty of Care in the Matter of Illegal Immigration
I
THE REFUSED HARMONY
Popular argument on this question, from both directions, tends to treat the Gospels as though they were a manual of border statute waiting to be applied. They are not, and a piece that pretends otherwise earns nothing but the reader's justified suspicion. But refusing that error is not the same as refusing the question. Scripture, read across its full canon and its subsequent theological elaboration, does make two distinct and authentically weighty claims that bear on the matter of illegal immigration:
One concerning the competence of Civil Authority,
The other concerning the personal duty owed to the stranger.
The temptation on the sovereigntist side is to state the first claim and quietly retire the second; the temptation on the welcome side is the mirror image. This essay does neither. It states the case for the nation-state's right to exclude and to deport at its full theological strength, and it holds that case against the scriptural duty of care without letting either side dissolve the other. Where the textual warrant for one side is thinner than the warrant for the other, that asymmetry will be named rather than smoothed over — the reader deserves to know which parts of this argument rest on direct Dominical speech and which rest on inference from natural law.
II
THE SWORD OF THE MAGISTRATE: ROMANS 13
AND THE THEOLOGY OF CIVIL COMPETENCE
The load-bearing text for any Christian defence of State Sovereignty over its own borders is not found in the Gospels at all but in Paul.[1] Romans 13:1–7 does not merely tolerate Civil Government as a necessary evil to be endured; it assigns the ruler a title — διάκονος θεοῦ, God's servant — and attaches to that title a genuine function, the bearing of the sword εἰς ὀργήν, for wrath, against the wrongdoer.
ὁ γὰρ ἄρχων θεοῦ διάκονός ἐστιν σοὶ εἰς τὸ ἀγαθόν. ἐὰν δὲ τὸ κακὸν ποιῇς, φοβοῦ· οὐ γὰρ εἰκῇ τὴν μάχαιραν φορεῖ· θεοῦ γὰρ διάκονός ἐστιν, ἔκδικος εἰς ὀργὴν τῷ τὸ κακὸν πράσσοντι.
(Rom. 13:4)
Cranfield's judgment on this passage remains the standard one: the grant of ἐξουσία here is real and functional, not a grudging accommodation to a fallen order that the Church merely suffers.[2] Käsemann goes further, arguing that διάκονος θεοῦ is a functional title carrying an actual, delegated competence rather than an honorific gesture toward whatever regime happens to hold power.[3] If that reading is correct — and it is the majority reading among serious exegetes of the passage — then the implications for immigration follow with some directness. A state's determination of who stands within its jurisdiction, who may lawfully enter it, and who may be compelled to leave it, is not an extraneous add-on to Civil Authority but falls within the ordinary exercise of the very competence Paul is describing: the ordering of a bounded political community for its own good and the punishment of those who transgress its law. On this reading, the deportation of a person who has entered or remained in a country in breach of its law is not merely a matter of administrative convenience the Church happens not to object to; it is an exercise of an authority Paul describes in starkly theological terms.
III
RENDER UNTO CAESAR:
THE BOUNDED CIVIL SPHERE
The Gospels themselves supply a text often pressed into exactly this service, though it must be handled with more care than it usually receives. Asked whether it is lawful to pay tribute to Caesar, Christ requests the coin, notes whose image it bears, and answers:
Ἀπόδοτε οὖν τὰ Καίσαρος Καίσαρι καὶ τὰ τοῦ Θεοῦ τῷ Θεῷ.
(Matt. 22:21)
[4] The pericope's original setting is fiscal, not migratory, and Jeremias is right to insist that the saying answers a question about taxation and does not, on its own terms, address the boundaries of a political community.[5] But the principle the saying establishes — that there exists a bounded civil sphere with real claims of its own, claims Christ does not dissolve by refusing the question's trap — has been extended by the subsequent tradition to civil obedience more broadly, including obedience to a state's laws of entry and residence. That extension is an analogical move, and an honest essay says so plainly rather than presenting Matthew 22:21 as though it settled immigration law by itself. What it does supply, legitimately, is confirmation from Christ's own mouth that Paul's account of a real, non-dissolved civil competence in Romans 13 is not a Pauline innovation at odds with the Gospel but consistent with the Lord's own handling of the Caesar question.
IV
THE GRADUATED WELCOME:
AQUINAS AND THE OLD LAW'S
STRANGER-PROVISIONS
The strongest textual support for a conditioned, rather than unconditional, welcome comes not from a text about state sovereignty as such but from within the very tradition the welcome side claims for itself: the Old Law's own treatment of the stranger. Aquinas, addressing the judicial precepts of the Old Law, identifies three classes of non-Israelite:
The hospes who passes through peacefully,
The advena who settles permanently,
And the hostis, the enemy.[6]
His point is not that Israel excluded foreigners but that Israel's admission of them was structured and graduated rather than immediate and unconditional. Deuteronomy makes the same point in narrower compass: Ammonites and Moabites are perpetually excluded from the assembly, while Edomites and Egyptians — for specific, stated reasons of kinship and hospitality received — are admitted only in the third generation.[7]
υἱοὶ ἐὰν γενηθῶσιν αὐτοῖς, γενεὰ τρίτη εἰσελεύσονται εἰς ἐκκλησίαν Κυρίου.
(Deut. 23:8, LXX)
This matters for the present argument in a specific way. It is not merely that natural law, in the abstract, permits a political community to regulate its own membership for the sake of the common good — though that is also true, and Aquinas's general account of human law's proper end supplies the abstract principle.[8] That competence, it should be said plainly, is not thereby unconditioned by justice: the same Thomist tradition holds that a law which fails the common good and works injustice against those it binds forfeits, to that extent, its claim to be law at all, a principle Aquinas draws from Augustine.[9] The state's right to regulate its borders is real; it is not therefore a right to regulate them by any means or toward any end. It is that the very corpus of law the welcome side most often cites as establishing an unconditional biblical hospitality in fact establishes a conditioned one, calibrated by circumstance, generation, and the community's own good. The earliest Christian community shows the same instinct in miniature: the Didache commands that anyone coming in the name of the Lord be received, but immediately qualifies the command — the visitor is to be tested, hospitality is capped at two or three days, and a visitor who wishes to settle permanently must work for his keep.[10] Welcome, on this evidence, was never biblically synonymous with unconditional or indefinite admission. It was always a structured act, bounded by the community's discernment of its own capacity and the visitor's conduct.
V
AN HONEST ACCOUNTING:
THE THIN PATRISTIC RECORD
Here the argument must be candid about its own limits, or it forfeits the right to call itself theology rather than advocacy. The Fathers, when they address the stranger, address almsgiving and personal or episcopal hospitality — Lactantius on the almsgiver's obligation, Basil on the Christian's duty not to hoard while the poor and the displaced go without.[11][12] They do not address, because they had no occasion to address, anything resembling a sovereign state's regulation of entry across a fixed juridical border in the modern sense. The apparatus assembled in the two preceding sections — Romans 13, the Caesar pericope, Aquinas on the Old Law, the Didache's conditions on hospitality — is a real and serious body of evidence, but it is substantially a Pauline and Thomist natural-law synthesis rather than a patristic consensus standing ready-made on the question of state border policy. A reader who came away from this essay believing the Fathers had directly debated illegal immigration would have been misled, and no rhetorical gain is worth that.
VI
THE COUNTERWEIGHT HELD AT FULL STRENGTH:
MATTHEW 25 AND THE SAMARITAN
None of the foregoing touches, still less cancels, the second scriptural claim. Christ's own criterion for the final judgment includes, without qualification or exception clause, the treatment of the stranger:
ξένος ἤμην καὶ συνηγάγετέ με ... ξένος ἤμην καὶ οὐ συνηγάγετέ με.
(Matt. 25:35, 43)
[13] This is addressed to persons, in the first person, by Christ himself — there is no more direct mode of scriptural address available. Nothing in the argument built above touches this claim, because the two claims operate at different levels.
The state's competence, on the Pauline and Thomist reading, concerns the macro-level question of whether a political community may define, regulate, and enforce its borders, including through deportation of those who have breached its law.
Matthew 25 concerns the micro-level question of how the individual Christian — whatever his view of that policy, and whatever office he holds — treats the actual person of the migrant standing in front of him: with contempt or with care, with cruelty in the manner of enforcement or with the minimum human dignity the parable demands.
A Christian may hold, on the grounds set out above, that the state possesses a real right to deport an illegal migrant, and still stand under the Matthew 25 judgment for how that migrant is housed, fed, spoken to, and treated in the process. The one claim does not purchase exemption from the other.
The Samaritan parable presses the same point from a different angle.[14] Asked to define the boundary of neighbourly obligation, Christ answers not with a definition but with a despised outsider who crosses a legal and ethnic line the lawyer's own categories would have excluded, and names him the exemplar. Whatever one concludes about the state's juridical competence over entry, the parable will not permit a Christian to treat legal status as itself a sufficient description of who counts as neighbour in the personal encounter. Legal categories may govern policy; they do not govern charity.
VII
CATECHISM 2241:
THE OFFICIAL REFUSAL TO RESOLVE
The Catechism's treatment of migration is worth citing at length precisely because it refuses the very simplification this essay has been resisting. It states that:
Wealthier nations are obliged, to the extent they are able, to welcome those in search of security and livelihood they cannot find at home;
And in the same breath affirms that political authorities may, for the sake of the common good for which they are responsible, make the exercise of that welcome subject to juridical conditions, while immigrants for their part are obliged to obey the laws of the country that receives them.[15]
Both halves of that formula are load-bearing:
A programme whose stated goal is the elimination of all illegal immigration, taken as an absolute end in itself, sits uneasily with a text that treats the welcome obligation as real rather than merely rhetorical;
A programme that treats border enforcement as inherently unchristian sits equally uneasily with a text that affirms the state's right to impose conditions for the sake of the common good.
The Catechism's own two supporting magisterial acts confirm the same double structure rather than resolving it in either direction:
Pius XII's constitution on migration framed the whole question as one of reciprocal obligation between nation and migrant rather than unilateral claim by either,[16] and
John XXIII affirmed the individual's right to emigrate for just cause in the same document, and indeed the same paragraph, in which he affirmed the receiving state's right to order its own common good.[17]
The magisterium, in other words, had every occasion to resolve this tension in one direction and declined to do so. That declining is itself a theological judgment, and it deserves more weight than either side of the popular argument usually gives it.
VIII
CONCLUSION:
HOLDING BOTH HANDLES
Read honestly and in full, the tradition yields neither of the slogans currently on offer:
It does not yield "Scripture mandates open borders," because the strongest textual and natural-law case — Romans 13's real grant of civil competence, Christ's own bounded-Caesar principle, and the Old Law's own graduated, conditioned welcome of the stranger — supports a genuine state right to regulate entry and to deport those who breach its law.
Nor does it yield "Scripture mandates the elimination of all illegal immigration" as a free-standing biblical imperative, because Matthew 25 and the Samaritan address the individual migrant's dignity in terms no policy outcome can retire, and because the Church's own considered magisterial statements refuse to let border competence swallow the welcome obligation whole.
What the tradition does yield is an asymmetry that this essay has tried not to paper over.[18] The state's competence over immigration specifically is reached by inference — from a general Pauline principle, from an analogical reading of the Caesar pericope, and from Thomist reasoning about the common good applied to a modern juridical situation none of these authors could have envisioned. The personal duty of care is not reached by inference at all; it is spoken by Christ in the first person as the standard by which every Christian, whatever office he holds and whatever policy he defends, will be judged. A reader honest with both texts will hold the state's right in one hand and that judgment in the other, and will not let the weight of either hand persuade him to set the other down. To deport is not unchristian. But how to deport may become unchristian if not handled carefully🟥
[1] Rom. 13:1–7 (RSV). All English Scripture quotations follow the Revised Standard Version unless otherwise noted; Greek text follows Nestle-Aland, 28th ed.
[2] C. E. B. Cranfield, A Critical and Exegetical Commentary on the Epistle to the Romans, International Critical Commentary, vol. 2 (Edinburgh: T&T Clark, 1979), 651–670, on the scope and limits of ἐξουσίαι as a genuine, not merely permitted, grant of authority.
[3] Ernst Käsemann, Commentary on Romans, trans. Geoffrey W. Bromiley (Grand Rapids: Eerdmans, 1980), 350–357, on διάκονος θεοῦ as a functional, not honorific, title.
[4] Matt. 22:15–22, esp. v. 21: Ἀπόδοτε οὖν τὰ Καίσαρος Καίσαρι καὶ τὰ τοῦ Θεοῦ τῷ Θεῷ.
[5] Joachim Jeremias, New Testament Theology: The Proclamation of Jesus, trans. John Bowden (London: SCM Press, 1971), 209–213, on the pericope's original fiscal setting and its subsequent extension by the tradition to the wider question of civil obedience.
[6] Thomas Aquinas, Summa Theologiae I-II, q. 105, a. 3, corp.: on the threefold classification of foreigners under the Old Law (hospites/peaceful sojourners, advenae/permanent settlers, hostes/enemies) and the law's graduated admission of the first two classes to full participation.
[7] Deut. 23:3–8 (LXX): perpetual exclusion of Ammonites and Moabites from the ἐκκλησία, contrasted with the third-generation admission of Edomites and Egyptians (v. 8: υἱοὶ ἐὰν γενηθῶσιν αὐτοῖς, γενεὰ τρίτη εἰσελεύσονται εἰς ἐκκλησίαν Κυρίου).
[8] Aquinas, ST I-II, q. 90, a. 2, corp., and q. 96, a. 4, corp., on human law's proper end as the common good and its binding force being conditioned on that end.
[9] Aquinas, ST I-II, q. 95, a. 2, corp., citing Augustine, De Libero Arbitrio 1.5: lex iniusta non videtur esse lex — an unjust law is not, properly speaking, law, and therefore does not of itself bind in conscience. Cited here to note that the state's competence discussed above is not unconditioned by justice.
[10] Didache 11–12 (SC 248, ed. W. Rordorf and A. Tuilier, Paris: Cerf, 1978), esp. 12.2–5: welcome offered in principle (πᾶς δὲ ὁ ἐρχόμενος ἐν ὀνόματι Κυρίου δεχθήτω) but immediately conditioned — testing, a limit of two or three days' hospitality, and a requirement to work if the visitor wishes to settle (εἰ δὲ θέλει πρὸς ὑμᾶς καθῆσθαι, τεχνίτης ὤν, ἐργαζέσθω καὶ φαγέτω).
[11] Lactantius, Divinae Institutiones 6.11–13 (CSEL 19, ed. S. Brandt), on hospitality as an obligation of the individual almsgiver, not a prescription addressed to civil magistrates.
[12] Basil of Caesarea, Homilia in illud: Destruam horrea mea, PG 31:261–277, similarly addressed to private almsgiving rather than to the polity's admission policy.
[13] Matt. 25:31–46, esp. vv. 35, 43: ξένος ἤμην καὶ συνηγάγετέ με ... ξένος ἤμην καὶ οὐ συνηγάγετέ με.
[14] Luke 10:25–37.
[15] Catechism of the Catholic Church, 2nd ed. (1997), §2241.
[16] Pius XII, Apostolic Constitution Exsul Familia Nazarethana (1 August 1952), AAS 44 (1952): 649–704, the Church's first sustained magisterial treatment of migration, framed throughout as reciprocal obligation rather than unilateral claim.
[17] John XXIII, Pacem in Terris (11 April 1963), §25: the right to emigrate is affirmed together with, not against, the receiving state's ordering of the common good; AAS 55 (1963): 257–304.
[18] So the asymmetry stands: the personal duty of care rests on direct Dominical speech in the first person (Matt. 25:40, 45), while the state's competence over immigration specifically is reached only by extension — from Romans 13's general grant of civil authority and from the analogical use of Matt. 22:21 — and via Thomist natural-law reasoning about the common good. Honesty requires naming the difference in textual weight rather than presenting both as resting on equally direct warrant.
