Exodus31:13
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.
Exodus 31 · King James Version
Learn it by heart — five steps, then Hosea brings it back just before you would forget.
Get HoseaHosea is coming to the App Store.