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--

 1:13 So, then, gird up the loins of your mind; be sober; come to a final decision to place your hope on the grace which is going to be brought to you at the revealing of Jesus Christ. 