Mark 13 36
You don't want to be caught sleeping if he returns unexpectedly.
Compare with other 3 random translations
GW Mark 13:36Make sure he doesn’t come suddenly and find you asleep.
AMP Mark 13:36[Watch, I say] lest He come suddenly and unexpectedly and find you asleep.
ERV Mark 13:36If you are always ready, he will not find you sleeping, even if he comes back earlier than expected.