Ephesians 6:4

And you fathers, do not provoke your children to anger: but bring them up in the instruction and discipline of the Lord.

2 Timothy 3:15

and that from a child you have known the holy scriptures, which are able to make you wise in order to salvation, through faith that is in Christ Jesus.

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 you fathers, do not provoke your children to anger: but bring them up in the instruction and discipline of the Lord.
2 Timothy 3:15
and that from a child you have known the holy scriptures, which are able to make you wise in order to salvation, through faith that is in Christ Jesus.