Genesis 7:7-9

And Noah goeth in, and his sons, and his wife, and his sons' wives with him, unto the ark, from the presence of the waters of the deluge;

of the clean beasts and of the beasts that are not clean, and of the fowl, and of every thing that is creeping upon the ground,

two by two they have come in unto Noah, unto the ark, a male and a female, as God hath commanded Noah.