Genesis 6:18-20

But I will make a covenant with you, Noah. You will go into the ship. You will take your wife with you, and also your three sons and their wives. You must also take two of every different kind of animal into the ship. One will be male and the other will be female. Then they will stay alive with you. Bring two of every different kind of bird, two of every different animal and two of every different living thing that moves along the ground. All these will come to you. You will take care of them so that they will stay alive.