Quick Definition
συνελαύνω v. I compel, urge
Strong's Definition
from 4862 and 1643; to drive together, i.e. (figuratively) exhort (to reconciliation)
KJV Usage: + set at one again
UBS Dictionary of the Greek New Testament
verb | ἀλλάσσω
40.1 · Reconciliation, Forgiveness · Reconciliation
to reconcile, to make things right with one another, reconciliation to reestablish proper friendly interpersonal relations after these have been disrupted or broken (the componential features of this series of meanings involve (1) disruption of friendly relations because of (2) presumed or real provocation (3) overt behavior designed to remove hostility, and (4) restoration of original friendly relations) Because of the variety and complexity of the components involved in reconciliation, it is often necessary to use an entire phrase in order to communicate satisfactorily the meanings of the terms in this subdomain. In some languages, however, reconciliation is often spoken of in idiomatic terms, for example, ‘to cause to become friends again,’ ‘to cause to snap fingers again’ (a symbol of friendly interpersonal relations in many parts of Africa), ‘to cause to be one again,’ or ‘to take away the separation.’ A particularly crucial element in terms for reconciliation is the assigning of responsibility for original guilt in causing the estrangement. Some terms, for example, imply that the individual who initiates reconciliation is by doing so admitting his guilt in causing the estrangement. This, of course, provides a completely untenable meaning for reconciliation in speaking of God reconciling people to himself through Christ.
In a number of languages the contextual basis for an expression for reconciliation is often found in terms relating to the reconciliation of husbands and wives. Such expressions fit in well with many contexts in the Scriptures, especially in speaking of reconciliation of people to God, since God is frequently referred to as the husband and the believers as the wife.
This is the only instance of συναλλάσσω in the NT, and it has εἰς εἰρήνην added to emphasize peace as the goal, although the feature of making peace between previously hostile individuals is already implicit in the act of reconciliation.
1 It may be that there are certain subtle distinctions of meaning in the series in 40.1, but there appears to be no contextual indication to justify setting up completely separate meanings.
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
συν-αλλάσσω: (see καταλλάσσω) ; to reconcile (Thuce., Xen., Plat., Dio Cass.; in diff. senses by diff. prof. auth.) : συνήλλασσεν αὐτοὺς εἰς εἰρήνην, (Vulg. reconcilabal. i. 6. sought to reconcile), conative impf. [οἵ. B. 205 (178); R.V. would have set them at one again], Acts vii. 26 LT Tr WH [see cuvedavve |.” UL συναναβαίνω
Mounce Concise Greek Dictionary
συναλλάσσω synallassō 1x
to negotiate or bargain with someone; to reconcile, Acts 7:26*
Abbott-Smith Greek Lexicon
** συν-ελαύνω
[in LXX: II Mac 4:26, 42 5:5 * ;]
to drive together, force together: εἰς εἰρήνην, Ac 7:26, Rec. (WH, RV, συνήλλασσεν).†
Moulton & Milligan — Vocabulary of the Greek NT
συναλλάσσω, “reconcile,” found in the NT only in the conative impf. Ac 7*8 συνήλλασσεν αὐτοὺς els εἰρήνην, ‘would have set them at one again” (AV, RV) (cf. Field Motes, p. 115). The following are exx. of the verb— BGU IV. 1120°8 (B.c. 5) μενεῖ ἡ τῶν καρπῶν συνάλλαξις.. .. ols ἐὰν οἱ μεμισθωμένοι συναλλάξωσι, P Oxy I. 34 verso (a.p, 127) τὰ τῶν σ[υνα]λλασσόντων ὀνόματα, ‘‘the names of the contracting parties,” 16. 2371-96 (a.p, 186) ἵνα οἱ συναλλάσσοντες μὴ κατ᾽ ἄγνοιαν ἐνεδρεύονται, ‘‘in order that persons entering into agreements may not be defrauded through ignorance”’ (Edd.), P Tebt 11. 413!” (ii/iii a.p.) ταῦτά σοι cvvak<d><ayn, “it was arranged with you” (Edd.), and BGU IV. 1062!° (A.D. 236-7) διὰ τοῦ αὐτοῦ... . συνηλλαχέναι TO τε ᾿Αμόι καὶ Σύρῳ. For the subst. συνάλλαξις see P Fay 1152 (c. B.C. 115) κατανωτιζόμενος τ[ὸ] . . [. . ]ws ἔχον kal τὰς συναλλάξεις, ‘turning his back on (justice) and the contracts”’ (Edd.): for συναλλαγή, P Oxy I. 70% (iii/A.D.) πᾶσα κυϊρί]ζα tvypados συναλλαγὴ πίστιν kal ἀλήθ[ειαν ἔγχει, “every valid written contract is credited and accepted” (Edd.): and for συνάλλαγμα, 20. 34 verso (A.D. 127) ἐγλογιζέσθωσαν τὰ συναλλάγματα (cf. Archiv ii. p. 492 ff).
Liddell-Scott-Jones — Greek-English Lexicon
συνελαύνω (sunelaunō) — to bring together. συνελαύνω, future -ελάσω [ᾰ]: Epic dialect aorist συνέλασσα: perfect participle συνεληλάμενος [Refs 4th c.BC+]: pluperfect -ηλάσμην[LXX]: aorist passive -ηλάσθην[LXX+8th c.BC+]present and Epic dialect aorist (except σὺν δ᾽ ἤλασε in tmesi); he uses the form ξυν- where required by the metre:—drive together, ληΐδα δ᾽ ἐκ πεδίου συνελάσσαμεν [Refs 8th c.BC+]; σὺν δ᾽ ἤλασ᾽ ὀδόντας drove his teeth together, [Refs 8th c.BC+]; hammer together, [Refs 1st c.AD+]; weld iron, [Refs 5th c.BC+]; draw together, συνέλασσε κάρη χεῖράς τε [Refs]; drive, force, τινὰ εἰς ὀλοὴν κῆρα [Refs 2nd c.AD+]:— passive, to be driven or forced into a contracted space, compressed, [Refs 4th c.BC+]; εἰς βραχὺ διάζωμα σ. to be contracted into.., [Refs 5th c.BC+]
2. constrain, force, τινὰ ἀποστῆναι τῶν οὐ δικαίως αὐτῷ προσηκόντων [Refs 5th c.AD+]; σ. τινὰ πρὸς εὐγνωμοσύνην bring him to reason, [Refs 6th c.AD+]; εἰς τέλος σ. bring to an end, [Refs 6th c.AD+]
II. match in combat, set to fight, θεοὺς ἔριδι ξυνελάσσαι [Refs 8th c.BC+]
II.2. intransitive, ἔριδι ξυνελαυνέμεν meet in quarrel, [Refs 8th c.BC+]