Génesis 17

You shall be circumcised in the flesh of your foreskin. It will be a token of the covenant between me and you.

Circuncidaréis, pues, la carne de vuestro prepucio, y será por señal del pacto entre mí y vosotros.

And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.