'Guard' in the Bible

And angels who did not keep their own designated place of power, but abandoned their proper dwelling place, [these] He has kept in eternal chains under [the thick gloom of utter] darkness for the judgment of the great day,

and keep yourselves in the love of God, waiting anxiously and looking forward to the mercy of our Lord Jesus Christ [which will bring you] to eternal life.

And to Him who is able to guard you not stumbling, and to set you in the presence of His glory unblemished, in gladness,