Genesis 6:19,20
And of every living thing of all flesh, two of every sort shall you bring into the ark, to keep them alive with you; they shall be male and female.
Nave's Topical Index—AKJV

Genesis 7:2,3,5,9,11
Of every clean beast you shall take to you by sevens, the male and his female: and of beasts that are not clean by two, the male and his female.
Nave's Topical Index—AKJV

Genesis 8:19
Every beast, every creeping thing, and every fowl, and whatever creeps on the earth, after their kinds, went forth out of the ark.
Nave's Topical Index—AKJV