John Gills Exposition of the Bible Commentary - Genesis 7:23
And every living substance was destroyed which was upon the face of the ground ,.... Not everything, particularly trees; for after the flood was abated there was an olive tree, a leaf of which was brought to Noah by the dove, Genesis 8:11 but all animals: both men and cattle, and the creeping things, and the fowl of the heaven, and they were destroyed from the earth ; this is repeated, partly for explanation of the preceding clause, and partly for confirmation of this general... read more
Matthew Henry's Complete Commentary - Genesis 7:21-24
Here is, I. The general destruction of all flesh by the waters of the flood. Come, and see the desolations which God makes in the earth (Ps. 46:8), and how he lays heaps upon heaps. Never did death triumph, from its first entrance unto this day, as it did then. Come, and see Death upon his pale horse, and hell following with him, Rev. 6:7, 8. 1. All the cattle, fowl, and creeping things, died, except the few that were in the ark. Observe how this is repeated: All flesh died, Gen. 7:21. All in... read more