Ephesians 6:4

And ye fathers, do not exasperate your children: but educate them in the nurture and admonition of the Lord.

2 Timothy 3:15

and that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation, through faith in Christ Jesus: for all scripture is by inspiration from God,

Treasury of Scripture Knowledge

Summary

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

Bible References

A child

Ephesians 6:4
And ye fathers, do not exasperate your children: but educate them in the nurture and admonition of the Lord.
2 Timothy 3:15
and that from a child thou hast known the holy scriptures, which are able to make thee wise unto salvation, through faith in Christ Jesus: for all scripture is by inspiration from God,