Mark 2:26σὺν
During the high priesthood of Abiathar, he entered the house of God and ate the consecrated bread, which was lawful only for the priests. And he gave some to his companions as well.”
Luke 1:56σὺν
Mary stayed with Elizabeth for about three months and then returned home.
Acts 1:22σὺν
beginning from John’s baptism until the day Jesus was taken up from us. For one of these must become a witness with us of His resurrection.”
1 Corinthians 5:4σὺν
When you are assembled in the name of our Lord Jesus and I am with you in spirit, along with the power of the Lord Jesus,
2 Corinthians 1:1σὺν
Paul, an apostle of Christ Jesus by the will of God, and Timothy our brother, To the church of God in Corinth, together with all the saints throughout Achaia:
Colossians 2:5σὺν
For although I am absent from you in body, I am present with you in spirit, and I delight to see your orderly condition and firm faith in Christ.

Abbott-Smith

σύν (old Att. ξύν),
prep. with dative,
expressing association, fellowship and inclusion. It gradually gave way to μετά, with genitive (cf. LS, see word; Bl., §41, 3), and is therefore comparatively infrequent in NT, being rare in Mat.4, Mrk.6, Jhn.3, and elsewhere (exx. Jas.1:11, 2Pe.1:18) only in Lk (Gosp. and Ac) and Paul. With, together with: of companionship and association, Luk.2:13, Jhn.21:3, Act.10:23, al.; εἶναι σύν τινι, Luk.7:12, Act.4:13, Php.1:23, al.; of partisanship, Act.4:13; οἱ σύν τινι, of attendants, companions or colleagues, Mrk.2:26, Luk.5:9, Act.5:17, al.; of assistance, ἡ χάρις τ. θεοῦ σὺν ἐμοί, 1Co.15:10; of two or more things together, almost = καί, Luk.23:11, Act.3:4 10:2 14:5 23:25, Eph.3:18; σὺν Χριστῷ ζῆν, 2Co.13:4; besides (FlJ, LXX), σὺν πᾶσι τούτοις, Luk.24:21.
In composition: with (συνχαίρω), together (συνωδίνω), altogether (συντελέω)
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.