And when Peter was come to himself, he said, Now I know of a surety, that the Lord hath sent his angel, and hath delivered me out of the hand of Herod, and from all the expectation of the people of the Jews.
Ver. 11. Now I know of a surety] Faith cannot he idle, or ungrateful for benefits received. If Peter have none else to tell it to, he will tell himself what God had done for him by his angel; and what great cause he had to be really and substantially thankful. So doth David, Psalms 103:1,4, &c. A good man can never be alone; for, in defect of other company, he can fruitfully converse with himself, and commune with his own conscience, and thereupon lift up many a humble, joyful, and thankful heart to God.