'Guard' in the Bible

He will give orders to His angels concerning thee, to guard thee safely;'

For already He had been commanding the foul spirit to come out of the man. For many a time it had seized and held him, and they had repeatedly put him in chains and fetters and kept guard over him, but he used to break the chains to pieces, and, impelled by the demon, to escape into the Desert.

And to the people He said, "Take care, be on your guard against all covetousness, for no one's life consists in the superabundance of his possessions."

Be on your guard. "If your brother acts wrongly, reprove him; and if he is sorry, forgive him;