Genesis 6:18-20

Young's Literal Translation

¹⁸ `And I have established My covenant with thee, and thou hast come in unto the ark, thou, and thy sons, and thy wife, and thy son's wives with thee;

¹⁹ and of all that liveth, of all flesh, two of every [sort] thou dost bring in unto the ark, to keep alive with thee; male and female are they.

²⁰ Of the fowl after its kind, and of the cattle after their kind, of every creeping thing of the ground after its kind, two of every [sort] they come in unto thee, to keep alive.