'Guarding' in the Bible

but their plot became known to Saul. They were also watching the city’s gates day and night so they could kill him;

The very night before Herod was to bring him forward, Peter was sleeping between two soldiers, bound with two chains, and sentries were in front of the door guarding the prison.

Even when the blood of your witness Stephen was being shed, I was standing there, approving it and guarding the coats of those who were killing him.'

When we came into Rome, Paul was allowed to live by himself with the soldier who was guarding him.