'Clean' in the Bible

Of every clean beast you will take seven males and seven females, and of the beasts which are not clean, two, the male and his female;

Of clean beasts, and of beasts which are not clean, and of birds, and of everything which goes on the earth,

And Noah made an altar to the Lord, and from every clean beast and bird he made burned offerings on the altar.

Did he not say to me himself, She is my sister? and she herself said, He is my brother: with an upright heart and clean hands have I done this.

Then Jacob said to all his people, Put away the strange gods which are among you, and make yourselves clean, and put on a change of clothing: