Acts 26:10,11

This I also did in Jerusalem, and many of the saints I shut up in prison, having received authority from the chief priests; and when they were put to death, I cast my vote against them.

11 And I punished them often in every synagogue and compelled them to blaspheme; and being exceedingly enraged against them, I persecuted them even to foreign cities.

1. Paul mentions several ways he persecuted Christians.

1. In Jerusalem many saints were put in prison.

2. He got authority from the chief priest.

3. Some were put to death.

4. Paul cast his vote to put them to death.

5. He entered synagogues and caused them to blaspheme

6. He even traveled to other cities and other countries to persecute Christians.