Reference

Acts 12:3

And because he saw it pleased the Jews, he proceeded further to take Peter also. (Then were the days of unleavened bread.)
1

Now about that time Herod the king stretched forth his hands to vex certain of the church.

2

And he killed James the brother of John with the sword.

3

And because he saw it pleased the Jews, he proceeded further to take Peter also. (Then were the days of unleavened bread.)

4

And when he had apprehended him, he put him in prison, and delivered him to four quaternions of soldiers to keep him; intending after Easter to bring him forth to the people.

5

Peter therefore was kept in prison: but prayer was made without ceasing of the church unto God for him.