Be sober. See 1 Peter 1:13.
be vigilant. Greek. gregoreo. Translated "watch", except here and 1 Thessalonians 5:10 (wake).
roaring. Greek. oruomai. Only here. Compare 2 Corinthians 11:3; 2 Corinthians 11:14.
devour. swallow up. See 1 Corinthians 15:54.