Acts 8:1, 3

Now, Saul agreed to be an accomplice to Stephen’s stoning and participated in his execution. From that day on, a great persecution of the church in Jerusalem began. All the believers scattered into the countryside of Judea and among the Samaritans, except the apostles who remained behind in Jerusalem.

Then Saul mercilessly persecuted the church of God, going from house to house into the homes of believers to arrest both men and women and drag them off to prison.