Genesis 6:19

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.

Genesis 7:2-3

Of every clean beast thou shalt take to thee seven and seven, the male and his female; and of the beasts that are not clean two, the male and his female:

Genesis 7:8-9

Of clean beasts, and of beasts that are not clean, and of birds, and of everything that creepeth upon the ground,

Genesis 7:15-16

And they went in unto Noah into the ark, two and two of all flesh wherein is the breath of life.

Genesis 8:17

Bring forth with thee every living thing that is with thee of all flesh, both birds, and cattle, and every creeping thing that creepeth upon the earth; that they may breed abundantly in the earth, and be fruitful, and multiply upon the earth.

Psalm 36:6

Thy righteousness is like the mountains of God; Thy judgments are a great deep: O Jehovah, thou preservest 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
Of every clean beast thou shalt take to thee seven and seven, the male and his female; and of the beasts that are not clean two, the male and his female:
Genesis 8:17
Bring forth with thee every living thing that is with thee of all flesh, both birds, and cattle, and every creeping thing that creepeth upon the earth; that they may breed abundantly in the earth, and be fruitful, and multiply upon the earth.
Psalm 36:6
Thy righteousness is like the mountains of God; Thy judgments are a great deep: O Jehovah, thou preservest man and beast.

American Standard Version Public Domain