1 Peter 5:8 in the King James Version
Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:
Context
7 casting all your worries on him, because he cares for you.
8 Be sober and self-controlled. Be watchful. Your adversary, the devil, walks around like a roaring lion, seeking whom he may devour.
9 Withstand him steadfast in your faith, knowing that your brothers who are in the world are undergoing the same sufferings.