Of all flesh two; i.e. either,
1. By couples, or male and female; but this is mentioned as a distinct thing in the close of the verse. Or rather,
2. Two at least of every sort, even of the unclean; but of the clean more, as is noted Genesis 7:2.
Related Commentaries of Genesis 6:19
Genesis 6:19
19 And of every living thing of all flesh, two of every sort shalt thou bring into the ark, to keep them alive with thee; they shall be male and female.