"For you, O Lord, are my hope, my trust, O LORD, from my youth. Upon you I have leaned from before my birth; you are he who took me from my mother's womb. My praise is continually of you." -Psalm 71:5,6
In his book, Paedofaith, Rich Lusk writes:
The Psalter treats infant trust not as a sporadic, occasional, or unpredictable reality, but as the norm in covenant children. God gives us believing children to work with and nurture. In this way, covenant children are a blessing and reward from the Lord. As we help them grow to mature faith, we fulfill the purpose of the cross-generational covenant promises. The psalmist has many remarkably deep, vivid, datable, and narratable experiences of God's grace, but he still maintains he was a believer from infancy; he trusted in God and knew Him from the very beginning of life. In this way, the Psalter norms Christian experience for the child growing up in a Christian environment. The experience of the psalmist should be the experience of our offspring. Our children belong to Christian homes and, like David, should learn to regard themselves as believers from infancy onward, not necessarily on the basis of experience, but as a corollary of the covenant promises.