Start children off on the way they should go, and even when they are old they will not turn from it. (NIV)

Train up a child in the way he should go [and in keeping with his individual gift or bent], and when he is old he will not depart from it. [Eph. 6:4; II Tim. 3:15.] (AMP)

Train up a child in the way he should go: and when he is old, he will not depart from it. (KJV)