Abbott-Smith Manual Greek Lexicon
συν-αθροίζω (G4867)
2 συν-αθροίζω [in LXX chiefly for קבץ ;] to gather together, assemble : c. acc. pers., Ac 19:25 ; pass., Ac 12:12 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain