Genesis 7:2

Treasury of Scripture Knowledge

Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that are not clean by two, the male and his female.

Of clean animals and of animals that are not clean and of fowls and of every thing that moves upon the earth,

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.

And Noah built an altar unto the LORD and took of every clean animal and of every clean fowl and offered burnt offerings on the altar.

Ye are the sons of the LORD your God: ye shall not cut yourselves nor make any baldness over your eyes for the dead.

and saw the heaven opened and a certain vessel descending unto him, as it had been a great sheet knit at the four corners and let down to the earth,

and this is that ye may discern between the holy and the profane and between the unclean and the clean

And they shall teach my people the difference between the holy and profane and teach them to discern between the clean and the unclean.