1 Peter 5:8-9 (NKJV)
8 Be [a]sober, be [b]vigilant; [c]because your adversary the devil walks about like a roaring lion, seeking whom he may devour. 9 Resist him, steadfast in the faith, knowing that the same sufferings are experienced by your brotherhood in the world.
Bonus for you:
Seth Moody’s Music and the power of God at work in a young man who has a heart for Christ: