Abbott-Smith Manual Greek Lexicon
κοπιάω (G2872)
23 κοπιάω , -ῶ ( κόπος ), [in LXX chiefly for יגע ;] (as in cl.) to grow weary : Mt 11:28 , Jo 4:6 , Re 2:3 (cf. Is 40:31 ). Hence, in LXX and NT, to work with effort , to toil : absol., Mt 6:28 , Lk 5:5 12:27 , Jo 4:38 , Ac 20:35 , I Co 4:12 , Eph 4:28 , II Ti 2:6 ; c. acc. rei, Jo 4:38 ; freq. in Paul. Epp. , of ministerial labour: I Co 15:10 16:16 ; seq. ἐν , Ro 16:12 , I Th 5:12 (v. M, Th. , in l.), I Ti 5:17 ; εἰς , Ro 16:6 , Ga 4:11 , Phl 2:16 , Col 1:29 , I Ti 4:10 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain