Exodus 31:16-18

Revised Standard Version Catholic Edition

¹⁶ Therefore the people of Israel shall keep the sabbath, observing the sabbath throughout their generations, as a perpetual covenant. ¹⁷ It is a sign for ever between me and the people of Israel that in six days the Lord made heaven and earth, and on the seventh day he rested, and was refreshed.’”

The Two Tablets of the Covenant

¹⁸ And he gave to Moses, when he had made an end of speaking with him upon Mount Sinai, the two tables of the testimony, tables of stone, written with the finger of God.