1 Timothy 4:7-8 But refuse profane and old wives’ fables. Exercise yourself toward godliness. For bodily exercise has some value, but godliness has value in all things, having the promise of the life which is now, and of that which is to come.

2 Timothy 3:16 Every Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness

Hebrews 5:14 But solid food is for those who are full grown, who by reason of use have their senses exercised to discern good and evil.

Hebrews 12:11 All chastening seems for the present to be not joyous but grievous; yet afterward it yields the peaceful fruit of righteousness to those who have been exercised thereby.