Gave heed unto them (επειχεν αυτοις). Imperfect active of επεχω, to hold to. For the idiom with τον νουν understood see Acts 7:14; 1. Timothy 4:16. He held his eyes right on Peter and John with great eagerness "expecting to receive something" (προσδοκων τ λαβειν). He took Peter's invitation as a promise of a large gift.