(Pro 19:18 KJV) Chasten thy son while there is hope, and let not thy soul spare for his crying.
Once when I was in elementary school I had a boil that had developed on my back. My mother set up her tools to deal with it. I immediately began screaming. I think everyone in the neighborhood thought I was being murdered by torture. I remember that I put on a great show. Was I in any danger? No. Did the boil need to be lanced? Yes. Did my screams stop my mother from doing her duty? Not a chance.
Children do not like discipline. They do not like to be corrected. I think of the way my granddaughter responds when she is told not to touch something. Now realize that adults don’t like to be disciplined either. It isn’t so cute when they throw their little tantrums. It is one of the reasons for the violence we see with the snowflakes rioting on college campuses.
So? Keep in mind that the old saying, “This is going to hurt me more than it will you” did not refer to the physical pain but the pain of being the one forced into the role of adult. Also keep in mind that the alternative is “death” (4191), not just the “crying” (4191) that the KJV refers to.