'Keep' in the Bible

And angels--those who did not keep the position originally assigned to them, but deserted their own proper abode--He reserves in everlasting bonds, in darkness, in preparation for the judgement of the great day.

must keep yourselves safe in the love of God, waiting for the mercy of our Lord Jesus Christ which will result in the Life of the Ages.

But to Him who is able to keep you safe from stumbling, and cause you to stand in the presence of His glory free from blemish and full of exultant joy--