For Jesus was commanding the evil spirits to be driven out of the man, because they had been controlling him for a long time. The man was continually being guarded and his hands and feet were bound with chains. [Sometimes] he broke loose from the chains and was driven into the desert by the evil spirits.

I protected them while I was with them by [the power of] your name which you gave me. [See verse 11]. I guarded them so that not one of them was lost except the "son of destruction" [i.e., Judas]. [This was] so that the Scripture would be fulfilled [Psa. 41:9 ?].

After beating them severely, they threw them in jail and ordered the jailor to have them securely guarded.

When we entered Rome [itself] Paul was permitted to live alone except for a soldier who guarded him.