Acts 12:3 in the World English Bible
When he saw that it pleased the Jews, he proceeded to seize Peter also. This was during the days of unleavened bread.
Context
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.