(Proverbs 7:3 KJV) Bind them upon thy fingers, write them upon the table of thine heart.
Our “heart” (3820) is a “table” (tablet NASB) (3871) but the writing surface here is not like a modern legal pad or notebook. This is not like writing a shopping list on a scrap of paper that will be thrown away. This was a surface that could take one message at a time at best and usually only one message ever. Think of Fred Flintstone writing on a rock with a hammer and chisel.
Paper is a modern convenience. Computer hard drives are a modern miracle. They have made it so we write down the most mundane and trivial things. Think of this blog and the archives. Because we write so much we have little discernment in what we write.
These were tablets of stone, wood or metal. You had a chance for one central message. Solomon is telling us to get our focus right. Put that message in the central place of your being.
So? If someone could read the message written on your heart, what would it say? Would it be a bit of meaningless doggerel or a devotion to the Eternal God? Oh, that’s right, He can read it, can’t He.