When I was with them, I kept them by the power of thy Name which thou hast given me; I guarded them, and not one of them perished ??only the son of perdition, that the scripture might be fulfilled.

So Peter was closely guarded in prison, while earnest prayer for him was offered to God by the church.

The very night before Herod meant to have him produced, Peter lay asleep between two soldiers; he was fastened by two chains, and sentries in front of the door guarded the prison.