Be sober and self-controlled. Be watchful. Your adversary the devil, walks around like a roaring lion, seeking whom he may devour.
He compares the devil to a lion, as though he had said, that he is a savage wild beast. He says that he goes round to devour, in order to rouse us to wariness. He calls him the adversary of the godly, that they might know that they worship God and profess faith in Christ on this condition, that they are to have continual war with the devil, for he does not spare the members who fights with the head. 