Verse 16
The testimony - The two tables of stone which were not yet given; these tables were called עדת eduth, from עד forward, onward, to bear witness to or of a person or thing. Not only the tables of stone, but all the contents of the ark, Aaron's rod, the pot of manna, the holy anointing oil, etc., bore testimony to the Messiah in his prophetic, sacerdotal, and regal offices.