Abbott-Smith Manual Greek Lexicon
ὁμοθυμαδόν (G3661)
11 ὁμοθυμαδόν ( ὁμός , θυμός ), [in LXX for יַחַד (freq. in Jb), Wi 10:20 18:5 , 12 , al.;] with one mind , with one accord : Ac 1:14 2:46 4:24 5:12 7:57 8:6 12:20 15:25 18:12 19:29 , Ro 15:6 (Hatch, Essays , 63 f., argues that the un-cl. sense together , which is found in Jb 3:18 38:33 , Nu 24:24 , Wi 18:5 , 12 (but not 10:20 ), al., should be attached to the NT instances, but v. Abbott, Essays , 96; MM, xviii).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain