Deuteronomy 6:9

And they shall take of the blood, and strike it on the two side posts and on the upper door post of the houses, wherein they shall eat it.

And thou shalt write them upon the door posts of thine house, and upon thy gates:

Oh that my words were now written! oh that they were printed in a book! That they were graven with an iron pen and lead in the rock for ever! For I know that my redeemer liveth, and that he shall stand at the latter day upon the earth:

Now go, write it before them in a table, and note it in a book, that it may be for the time to come for ever and ever:

Behind the doors also and the posts hast thou set up thy remembrance: for thou hast discovered thyself to another than me, and art gone up; thou hast enlarged thy bed, and made thee a covenant with them; thou lovedst their bed where thou sawest it.

And the LORD answered me, and said, Write the vision, and make it plain upon tables, that he may run that readeth it.