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 all clean beasts thou shalt take to thee by sevens, a male and its female; but of the beasts that are not clean two, a male and its female.

Genesis 7:8-9

Of clean beasts, and of beasts that are not clean, and of fowl, and of everything that creeps on the ground,

Genesis 7:15-16

And they went to Noah, into the ark, two and two of all flesh, in which was the breath of life.

Genesis 8:17

Bring forth with thee every animal which is with thee, of all flesh, fowl as well as cattle, and all the creeping things which creep on the earth, that they may swarm on the earth, and may be fruitful and multiply on the earth.

Psalm 36:6

Thy righteousness is like the high mountains; thy judgments are a great deep: thou, Jehovah, 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 all clean beasts thou shalt take to thee by sevens, a male and its female; but of the beasts that are not clean two, a male and its female.
Genesis 8:17
Bring forth with thee every animal which is with thee, of all flesh, fowl as well as cattle, and all the creeping things which creep on the earth, that they may swarm on the earth, and may be fruitful and multiply on the earth.
Psalm 36:6
Thy righteousness is like the high mountains; thy judgments are a great deep: thou, Jehovah, preservest man and beast.