John Chrysostom : "And the hand of the Lord," it says, "was with them," that is, they wrought miracles; "and a great number believed, and turned unto the Lord." Do you mark why now also there was need of miracles, namely, that they might believe? — Homily on Acts 25 Oecumenius : They then also spoke to them, proclaiming the Lord Jesus, and they all believed, for, he says, the hand of the Lord was with them; that is, they were performing signs. For it was necessary that signs be done in order that they might believe. [CHRYSOSTOM] — Commentary on Acts