Psalms 78:1-4, 6

My people, hear my teaching; listen to the words of my mouth. I will open my mouth with a parable; I will utter hidden things, things from of old— things we have heard and known, things our ancestors have told us. We will not hide them from their descendants; we will tell the next generation the praiseworthy deeds of the LORD, his power, and the wonders he has done.

so the next generation would know them, even the children yet to be born, and they in turn would tell their children.