"Peter later elaborates on this. “Therefore, preparing your minds for action, and being sober-minded, set your hope fully on the grace that will be brought to you at the revelation of Jesus Christ” (1 Pet. 1:13). “Preparing your minds for action” is one way to translate the Greek words that mean, “girding up the loins of your mind.” Picture, then, gathering up extraneous thoughts and fastening them out of the way, preparing your mind for exertion.

The book of 1 Peter is full of instructions for inspecting the readiness of our minds. Be holy as He is holy. Purify your souls by obedience to the truth. Love one another earnestly with pure hearts. Live as people who are free yet as bondservants (doulos) of God."