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 beasts, and of beasts that are not clean, and of fowl, and of everything that creeps on the ground,

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 to Jehovah; and took of every clean animal, and of all clean fowl, and offered up burnt-offerings on the altar.

Ye are sons of Jehovah your God: ye shall not cut yourselves, nor make any baldness between your eyes for a dead person.

and he beholds the heaven opened, and a certain vessel descending, as a great sheet, bound by the four corners and let down to the earth;

that ye may put difference between the holy and the unholy, and between unclean and clean,

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