5 Peter therefore was kept in the prison, but constant prayer was made by the assembly to God for him.
6 The same night when Herod was about to bring him out, Peter was sleeping between two soldiers, bound with two chains. Guards in front of the door kept the prison. 7 And behold, an angel of the Lord stood by him, and a light shone in the cell. He struck Peter on the side, and woke him up, saying, “Stand up quickly!” His chains fell off from his hands. 8 The angel said to him, “Get dressed and put on your sandals.” He did so. He said to him, “Put on your cloak, and follow me.” 9 And he went out and followed him. He didn’t know that what was being done by the angel was real, but thought he saw a vision. 10 When they were past the first and the second guard, they came to the iron gate that leads into the city, which opened to them by itself. They went out, and went down one street, and immediately the angel departed from him. 11 When Peter had come to himself, he said, “Now I truly know that the Lord has sent out his angel and delivered me out of the hand of Herod, and from everything the Jewish people were expecting.” 12 Thinking about that, he came to the house of Mary, the mother of John whose surname was Mark, where many were gathered together and were praying. 13 When Peter knocked at the door of the gate, a maid named Rhoda came to answer. 14 When she recognized Peter’s voice, she didn’t open the gate for joy, but ran in, and reported that Peter was standing in front of the gate. 15 They said to her, “You are crazy!” But she insisted that it was so. They said, “It is his angel.” 16 But Peter continued knocking. When they had opened, they saw him, and were amazed. 17 But he, beckoning to them with his hand to be silent, declared to them how the Lord had brought him out of the prison. He said, “Tell these things to James, and to the brothers.” Then he departed, and went to another place. 18 Now as soon as it was day, there was no small stir among the soldiers about what had become of Peter. 19 When Herod had sought for him, and didn’t find him, he examined the guards, and commanded that they should be put to death. He went down from Judea to Caesarea, and stayed there.
Matthew Henry's Commentary on Acts 12:5-19
Commentary on Acts 12:1-5
(Read Acts 12:1-5)
James was one of the sons of Zebedee, whom Christ told that they should drink of the cup that he was to drink of, and be baptized with the baptism that he was to be baptized with, Matthew 20:23. Now the words of Christ were made good in him; and if we suffer with Christ, we shall reign with him. Herod imprisoned Peter: the way of persecution, as of other sins, is downhill; when men are in it, they cannot easily stop. Those make themselves an easy prey to Satan, who make it their business to please men. Thus James finished his course. But Peter, being designed for further services, was safe; though he seemed now marked out for a speedy sacrifice. We that live in a cold, prayerless generation, can hardly form an idea of the earnestness of these holy men of old. But if the Lord should bring on the church an awful persecution like this of Herod, the faithful in Christ would learn what soul-felt prayer is.
Commentary on Acts 12:6-11
(Read Acts 12:6-11)
A peaceful conscience, a lively hope, and the consolations of the Holy Spirit, can keep men calm in the full prospect of death; even those very persons who have been most distracted with terrors on that account. God's time to help, is when things are brought to the last extremity. Peter was assured that the Lord would cause this trial to end in the way that should be most for his glory. Those who are delivered out of spiritual imprisonment must follow their Deliverer, like the Israelites when they went out of the house of bondage. They knew not whither they went, but knew whom they followed. When God will work salvation for his people, all difficulties in their way will be overcome, even gates of iron are made to open of their own accord. This deliverance of Peter represents our redemption by Christ, which not only proclaims liberty to the captives, but brings them out of the prison-house. Peter, when he recollected himself, perceived what great things God had done for him. Thus souls delivered out of spiritual bondage, are not at first aware what God has wrought in them; many have the truth of grace, that want evidence of it. But when the Comforter comes, whom the Father will send, sooner or later, he will let them know what a blessed change is wrought.
Commentary on Acts 12:12-19
(Read Acts 12:12-19)
God's providence leaves room for the use of our prudence, though he has undertaken to perform and perfect what he has begun. These Christians continued in prayer for Peter, for they were truly in earnest. Thus men ought always to pray, and not to faint. As long as we are kept waiting for a mercy, we must continue praying for it. But sometimes that which we most earnestly wish for, we are most backward to believe. The Christian law of self-denial and of suffering for Christ, has not done away the natural law of caring for our own safety by lawful means. In times of public danger, all believers have God for their hiding-place; which is so secret, that the world cannot find them. Also, the instruments of persecution are themselves exposed to danger; the wrath of God hangs over all that engage in this hateful work. And the range of persecutors often vents itself on all in its way.