'Token Of The Covenant' in the Bible

And God said, This is the token of the covenant which I make between Me and you and every living creature with you, for everlasting generations:

And God said to Noah, This is the token of the covenant which I have established between Me and all flesh that is upon the earth.

And you shall circumcise the flesh of your foreskin. And it shall be a token of the covenant between Me and you.