'Guard' in the Bible

And sitting down, they kept guard over him there.

But the centurion, and they who were with him on guard over Jesus, seeing the earthquake and the things that took place, feared greatly, saying, Truly this man was Son of God.

And immediately the king, having sent one of the guard, ordered his head to be brought. And he went out and beheaded him in the prison,

And having passed through a first and second guard, they came to the iron gate which leads into the city, which opened to them of itself; and going forth they went down one street, and immediately the angel left him.

and the peace of God, which surpasses every understanding, shall guard your hearts and your thoughts by Christ Jesus.

Against whom be thou also on thy guard, for he has greatly withstood our words.