Abbott-Smith Manual Greek Lexicon
βοηθέω (G997)
8 βοηθέω , -ῶ ( βοή + θέω , to run ), [in LXX chiefly for עזר ;] to come to aid, to help, succour : absol., Ac 21:28 ; c dat., Mt 15:25 , Mk 9:22 , 24 Ac 16:9 , II Co 6:2 (LXX) , He 2:18 , Re 12:16 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain