5 But while Peter was in prison, the church prayed very earnestly for him.
6 The night before Peter was to be placed on trial, he was asleep, fastened with two chains between two soldiers. Others stood guard at the prison gate. 7 Suddenly, there was a bright light in the cell, and an angel of the Lord stood before Peter. The angel struck him on the side to awaken him and said, "Quick! Get up!" And the chains fell off his wrists. 8 Then the angel told him, "Get dressed and put on your sandals." And he did. "Now put on your coat and follow me," the angel ordered. 9 So Peter left the cell, following the angel. But all the time he thought it was a vision. He didn't realize it was actually happening. 10 They passed the first and second guard posts and came to the iron gate leading to the city, and this opened for them all by itself. So they passed through and started walking down the street, and then the angel suddenly left him. 11 Peter finally came to his senses. "It's really true!" he said. "The Lord has sent his angel and saved me from Herod and from what the Jewish leaders had planned to do to me!" 12 When he realized this, he went to the home of Mary, the mother of John Mark, where many were gathered for prayer. 13 He knocked at the door in the gate, and a servant girl named Rhoda came to open it. 14 When she recognized Peter's voice, she was so overjoyed that, instead of opening the door, she ran back inside and told everyone, "Peter is standing at the door!" 15 "You're out of your mind!" they said. When she insisted, they decided, "It must be his angel." 16 Meanwhile, Peter continued knocking. When they finally opened the door and saw him, they were amazed. 17 He motioned for them to quiet down and told them how the Lord had led him out of prison. "Tell James and the other brothers what happened," he said. And then he went to another place. 18 At dawn there was a great commotion among the soldiers about what had happened to Peter. 19 Herod Agrippa ordered a thorough search for him. When he couldn't be found, Herod interrogated the guards and sentenced them to death. Afterward Herod left Judea to stay in Caesarea for a while.
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.