A.T. Robertson Commentary Acts 3:5

"And he gave heed unto them, expecting to receive something from them." — Acts 3:5 (ASV)

Gave heed unto them (επειχεν αυτοις). Imperfect active of επεχω, to hold to. For the idiom with τον νουν understood see 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.