Charles H. Spurgeon on Psalms 78:35

And they remember that God was their rock. Sharp strokes awoke their sleepy memories. Reflection followed infliction. They were led to see that all their dependence must be placed upon their God; for he alone had been their shelter, their foundation, their fountain of supply, and their unchangeable friend. What could have made them forget this? Was it that their stomachs were so full of flesh that thy had no space for ruminating upon spiritual things? And the high God their redeemer. They had forgotten this also. The high hand and outstretched arm which redeemed them out of bondage had both faded from their mental vision. Alas, poor man, how readily dost thou forget thy God! Shame on thee, ungrateful worm, to have no sense of favours a few days after they have been received. Will nothing make thee keep in memory the mercy of thy God except the utter withdrawal of it?