Genesis 6:19

And of every living thing of all flesh, you shall bring two of every kind into the ark, to keep them alive with you; they shall be male and female.

Genesis 7:2-3

You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean two, a male and his female;

Genesis 7:8-9

Of clean animals and animals that are not clean and birds and everything that creeps on the ground,

Genesis 7:15-16

So they went into the ark to Noah, by twos of all flesh in which was the breath of life.

Genesis 8:17

Bring out with you every living thing of all flesh that is with you, birds and animals and every creeping thing that creeps on the earth, that they may breed abundantly on the earth, and be fruitful and multiply on the earth.”

Psalm 36:6

Your righteousness is like the mountains of God;
Your judgments are like a great deep.
O Lord, You preserve man and beast.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Two

Genesis 7:2
You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean two, a male and his female;
Genesis 8:17
Bring out with you every living thing of all flesh that is with you, birds and animals and every creeping thing that creeps on the earth, that they may breed abundantly on the earth, and be fruitful and multiply on the earth.”
Psalm 36:6
Your righteousness is like the mountains of God;
Your judgments are like a great deep.
O Lord, You preserve man and beast.