John Gill Commentary Psalms 78:11

"And they forgat his doings, And his wondrous works that he had showed them." — Psalms 78:11 (ASV)

And forgat his works, and his wonders That is, his wonderful works, the miracles he wrought in their favour, and for their deliverance, afterwards particularly mentioned; these were not only forgotten in the next generation, (Judges 15:10) , but in a few years, yea, in a few months, nay, in a few days, when they had been but three days' journey in the wilderness, after their passage through the Red sea, see (Exodus 15:1Exodus 15:22Exodus 15:24) , which occasioned the observation of the psalmist, (Psalms 106:12Psalms 106:13) , that he has showed them; done in their sight, and in the sight of their fathers, as follows.