The greatest unkindness they could possibly do the child!
"Do not withhold discipline from a child; if you punish him with the rod, he will not die.
Punish him with the rod—and save his soul from death!" Proverbs 23:13-14
To leave the roots of weeds growing in the garden among the flowers—is to insure the springing up of those weeds by and by, to mar the beauty of the garden.
In the same way, some parents have such foolish hearts that they cannot bear to correct a child lest they cause it pain. They forget that to leave an uncorrected fault in a child, or to allow any wrong habit to grow up in its life unchecked—is the greatest unkindness they could possibly do the child!
No tender feeling should ever prevent a parent from trying to correct a fault in a child. Love must always seek the best.
"Chasten your son while there is hope—and do not set your heart on his destruction!" Proverbs 19:18