Matthew Henry Commentary Genesis 8:1-3

"And God remembered Noah, and all the beasts, and all the cattle that were with him in the ark: and God made a wind to pass over the earth, and the waters assuaged; the fountains also of the deep and the windows of heaven were stopped, and the rain from heaven was restrained; and the waters returned from off the earth continually: and after the end of a hundred and fifty days the waters decreased." — Genesis 8:1-3 (ASV)

The whole race of mankind, except Noah and his family, were now dead. Therefore, God's remembering Noah was the return of his mercy to mankind, of whom he would not make a complete end. The demands of Divine justice had been answered by the ruin of sinners.

God sent his wind to dry the earth and seal up his waters. The same hand that brings the desolation must bring the deliverance; to that hand, therefore, we must always look.

When afflictions have done the work for which they are sent, whether killing work or curing work, they will be taken away. As the earth was not drowned in a day, so it was not dried in a day. God usually works deliverance for his people gradually, so that the day of small things may not be despised, nor the day of great things be despaired of.