23 After they had been severely flogged, they were thrown into prison, and the jailer was commanded to guard them carefully.

Read Acts 16:23 Using Other Translations

And when they had laid many stripes upon them, they cast them into prison, charging the jailor to keep them safely:
And when they had inflicted many blows upon them, they threw them into prison, ordering the jailer to keep them safely.
They were severely beaten, and then they were thrown into prison. The jailer was ordered to make sure they didn’t escape.