Exodus 31:12 in the World English Bible
The LORD spoke to Moses, saying,
Context
11 And the anointing oil, and sweet incense for the holy place: according to all that I have commanded thee shall they do.
12 And the LORD spake unto Moses, saying,
13 Speak thou also unto the children of Israel, saying, Verily my sabbaths ye shall keep: for it is a sign between me and you throughout your generations; that ye may know that I am the LORD that doth sanctify you.