Exodus 31:16

And the sons of Israel shall watch the Sabbath to do the Sabbath for their generation, a covenant forever.

I have set my bow in the cloud, and it shall be for a sign of a covenant between me and between the earth.

And ye circumcised the flesh of your uncircumcision; and it was for a sign of the covenant between me and between you.

To Zion shall they ask the way, thither their faces: Come ye, and we will join ourselves to Jehovah an eternal covenant; it shall not be forgotten.

Treasury of Scripture Knowledge

Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant.

I have set my bow in the cloud, and it shall be for a sign of a covenant between me and between the earth.

And ye circumcised the flesh of your uncircumcision; and it was for a sign of the covenant between me and between you.

To Zion shall they ask the way, thither their faces: Come ye, and we will join ourselves to Jehovah an eternal covenant; it shall not be forgotten.

And consecrate my Sabbaths; and they were for a sign between me and between you to know that I am Jehovah your God.