Psalms 78:39

For he remembered that they were but flesh - That they were human; that they were weak; that they were prone to err; that they were liable to fall into temptation. In his dealings with them he took into view their fallen nature; their training; their temptations; their trials; their weaknesses; and he judged them accordingly. Compare Psalms 103:14. So it was with the Saviour in his treatment of his disciples, “The spirit indeed is willing, but the flesh is weak,” Matthew 26:41. God will judge people as they are; he will not in his judgments forget that they are people, and that they are weak and feeble. People often judge their fellow-men with much more harshness, with much less allowance for their infirmities and weaknesses, than God shows in his dealings with mankind. And yet such are the very people who are most ready to blame God for his judgments. If God acted on the principle and in the manner according to which they act, they could hope for no mercy at his hand. It is well for them that there is not one like themselves on the throne of the universe.

A wind that passeth away, and cometh not again - Which blows by us, and is gone forever. What a striking description is this of man! How true of an individual! How true of a generation! How true of the race at large! God remembers this when he thinks of people, and he deals with them accordingly. He is not harsh and severe, but kind and compassionate. To man, a being so feeble - to the human race, so frail - to the generations of that race, so transitory, so soon passing off the stage of life - he is ever willing to show compassion. He does not make use of his great power to crush them; he prefers to manifest his mercy in saving them.