The following is from a message by William S. Plumer entitled The Ten Commandments.
The heart of your child is corrupt, and all your teaching and example will be lost without God's blessing. You cannot change the heart, renew the will, or wash away the sins of your child. God alone can impart to him a love of the truth, or give him repentance. You may use your best endeavors--but all will be in vain without God's Spirit.
A mother of eleven pious children, who being asked how she came to be so much blessed, said, "I never took one of them into my arms to give it nourishment, that I did not pray that I might never nurse a child for the devil."