To show that the LORD JESUS CHRIST is the Trainor of our children, we just nurture and bring them up to the LORD through His WORDS.
Who is training up your child?
The LORD. I cooperate with the LORD.
Isaiah 54:13 (Amplified Bible)
And all your [spiritual] children shall be disciples [taught by the Lord and obedient to His will], and great shall be the peace and undisturbed composure of your children.