§ 02 · King James Bible
Deuteronomy 31:13
And that their children, which have not known any thing, may hear, and learn to fear the LORD your God, as long as ye live in the land whither ye go over Jordan to possess it.
Simple English
So, tell your kids about God, even if they're young, so they can learn to fear and obey Him while you're in the land beyond the Jordan River, which you're going to take control of.
* Work in progress - there may be occasional inaccuracies