Deuteronomy 6:7 You shall teach them diligently to your children, and shall talk of them when you sit in your house, when you walk by the way, when you lie down, and when you rise up.
Teaching children and youth is one of the most important tasks we have; without sound teaching they will not get to hear the truth!
But it is not just teaching them the worldly things they need. They need to know the Gospel so that they can get to know God as well.
Without a relationship with Christ, children are not going to be able to “walk on water”, they will only walk like everyone other non-believer.