Therefore, prepare your minds for action,{Literally, "gird up the loins of your mind"} be sober and set your hope fully on the grace that will be brought to you at the revelation of Jesus Christ--
But if the apostle alludes here to the approaching revelation of Christ to inflict judgment on the Jews for their final rebellion and obstinacy, then the grace, χαριν, benefit, may intend their preservation from the evils that were coming upon that people, and their wonderful escape from Jerusalem at the time that the Roman armies came against it.