'Watch' in the Bible

But Saul got knowledge of their design. And they kept watch day and night on the roads out of the town, so that they might put him to death:

And having taken him, he put him in prison, with four bands of armed men to keep watch over him; his purpose being to take him out to the people after the Passover.

On that very night before Herod was going to bring him out for trial, Peter was sleeping between two soldiers, bound with two chains, while guards in front of the door were keeping watch over the prison.

Watch out, then, that what is spoken about by the prophets does not happen to you:

Watch out for yourselves and for all the flock of which the Holy Spirit has made you overseers, to shepherd the church of God that he obtained with the blood of his own Son.

Therefore watch, and remember, that by the space of three years I ceased not to warn every one night and day with tears.

When the centurion heard it, he went to the commanding officer and told him, "Watch what you are about to do, for this man is a Roman!"

And when we came into Rome, they let Paul have a house for himself and the armed man who kept watch over him.