How long wilt thou sleep, O sluggard?
when wilt thou arise out of thy sleep?
Yet a little sleep, a little slumber,
a little folding of the hands to sleep:
So shall thy poverty come
as one that travelleth,
and thy want as an armed man.

Proverbs 6:9-11

But I keep under my body,
and bring it into subjection:
lest that by any means,
when I have preached to others,
I myself should be a castaway.

1 Corinthians 9:27