Enduring the chastening of God
For consider Him who endured such hostility from sinners against Himself, lest you become weary and discouraged in your souls. You have not yet resisted to bloodshed, striving against sin. And you have forgotten the exhortation which speaks to you as to sons: "my son, do not despise the chastening of the lord, nor be discouraged when you are rebuked by Him; for whom the Lord loves He chastens, and scourges every son whom he receives."
If you endure chastening, God deals with you as with sons; for what son is there whom a father does not chasten? But if you are without chastening, of which all have become partakers, then you are illegitimate and not sons.
Furthermore, we have had human fathers who corrected us, and we paid them respect.
Shall we not much more readily be in subjection to the Father of spirits and live? For they indeed for a few days chastened us as seemed best to them, but He for our profit, that we may be partakers of His holiness.
Now no chastening seems to be joyful for the present, but painful; nevertheless, afterward it yields the peaceable fruit of righteousness to those who have been trained by it.