Acts 4:33

δυνάμει μεγάλῃ (the order of the Vulg.) with אABD and several cursives.

33. ἀπεδίδουν τὸ μαρτύριον, they gave their witness. The article should have its force. See above on Acts 4:12. The verb is also much stronger than the usual verb ‘to give.’ It is used for ‘paying a debt’ (Matthew 18:29; Luke 7:42) and for ‘rendering an account’ (Matthew 12:36; Hebrews 13:17): so that there is implied in it the sense of obligation under which the Apostles so constantly declare themselves placed (cf. above, Acts 4:20).

χάρις τε μεγάλη, and great grace (or favour). Like their Master, while experiencing the favour of God, they were also finding favour with men. Cf. Acts 5:13.