John Trapp on Psalms 81:7

Verſ. 7. Thou calledſt in trouble] Their trouble called, though themſelves had been ſilent; I have ſeen, I have ſeen the afflictions of my people, &c. but they cried to the Lord at the red Sea, Exod. 14.10, 15. and were delivered.

I anſwered thee in the ſecret place of thunder] i. e. In the Pillar of Cloud, that ſtood betwixt the two Armies, and thundred againſt the Aegyptians, Exod. 14.24. Confer Lam. 3.44.

I proved thee at the waters of Meribah] When thou hadſt but newly foot out of ſnare; and yet there, and then thou ſhewedſt thy ſelf. O thine ungratefulneſs! &c. this hath been thy manner from thy youth.