John Calvin Commentary Psalms 78:4

"We will not hide them from their children, Telling to the generation to come the praises of Jehovah, And his strength, and his wondrous works that he hath done." — Psalms 78:4 (ASV)

We will not conceal them from their children in the generation to come. Some take the verb נכחד, nechached, in the Niphal conjugation, and translate it, they are not concealed or hidden.

But it should, according to the rules of grammar, be resolved as follows: We will not conceal them from our posterity, implying that what we have been taught by our ancestors we should endeavor to transmit to their children.

By this means, all pretense of ignorance is removed, for it was God’s will that these things should be published from age to age without interruption, so that, being transmitted from father to child in each family, they might reach even the last family of man.

The purpose for which this was to be done is shown: that they might celebrate the praises of Jehovah, in the wonderful works which he hath done.