Proverbs 24:10 in the World English Bible
If you falter in the time of trouble, your strength is small.
Context
9 The thought of foolishness is sin: and the scorner is an abomination to men.
10 If thou faint in the day of adversity, thy strength is small.
11 If thou forbear to deliver them that are drawn unto death, and those that are ready to be slain;