Internalization of the gospel is the process of your children embracing the things of God as their own living faith….

It is obvious that internalizing the Gospel requires the work of the Holy Spirit in the child. No parent can do that work; nor can you produce it through your labors.

You labor, however, in the hope that God honors his covenant and works through means. While you dare not presume upon His sovereign mercy, you may labor with the expectation that the Gospel is powerful.

Shepherding a Child’s Heart, p. 198