Hebrews 12:5-8 NIV

[5] And have you completely forgotten this word of encouragement that addresses you as a father addresses his son? It says, “My son, do not make light of the Lord’s discipline, and do not lose heart when he rebukes you, [6] because the Lord disciplines the one he loves, and he chastens everyone he accepts as his son.” [7] Endure hardship as discipline; God is treating you as his children. For what children are not disciplined by their father? [8] If you are not disciplined—and everyone undergoes discipline—then you are not legitimate, not true sons and daughters at all.