Hebrews 12:11-13New International Version - UK (NIVUK)
11 No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it.
12 Therefore, strengthen your feeble arms and weak knees. 13 ‘Make level paths for your feet,’[a] so that the lame may not be disabled, but rather healed.