Genesis 6:19

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

Genesis 7:2-3

From all the clean animals you must take for yourself {seven pairs}, a male and its mate. And from the animals that [are] not clean [you must take] two, a male and its mate,

Genesis 7:8-9

Of clean animals, and of animals which [are] not clean, and of the birds, and everything that creeps upon the ground,

Genesis 7:15-16

And they came to Noah to the ark, {two of each}, from every living thing in which [was] the breath of life.

Genesis 8:17

Bring out with you all the living things which [are] with you, from all the living creatures--birds, and animals, and everything that creeps on the earth, and let them swarm on the earth and be fruitful and multiply on the earth."

Psalm 36:6

Your righteousness [is] {like the mighty mountains}, your judgments [like the] great deep. You save man and beast, O Yahweh.

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
From all the clean animals you must take for yourself {seven pairs}, a male and its mate. And from the animals that [are] not clean [you must take] two, a male and its mate,
Genesis 8:17
Bring out with you all the living things which [are] with you, from all the living creatures--birds, and animals, and everything that creeps on the earth, and let them swarm on the earth and be fruitful and multiply on the earth."
Psalm 36:6
Your righteousness [is] {like the mighty mountains}, your judgments [like the] great deep. You save man and beast, O Yahweh.