'Testimony' in the Bible
When the camp is about to travel, Aaron and his sons are to come and take down the veil of the curtain and cover the Ark of the Testimony with it.
When Moses entered the Tent of Meeting to speak with the L ORD, he heard a voice speaking to him above the Mercy Seat over the Ark of the Testimony. He spoke to him from between the two cherubim.
On the same morning that the tent was set up, a cloud covered the tent, that is, the Tent of Testimony, and in the evening fire appeared over the tent until morning.
Then Moses laid out the rods in the LORD'S presence, inside the Tent of Testimony.
The next morning, Moses went to the Tent of Testimony and the rod of Aaron of the tribe of Levi had burst into bloom! It sprouted buds, bloomed blossoms, and produced fully ripe almonds!
Then the Lord instructed Moses, "Return Aaron's rod before the testimony to be kept for a reminder against the rebels so that you may put an end to their complaints against me and so that they won't die."
Moreover, bring your brothers from your father's tribe of Levi with you, so they may join you and minister to you while you and your sons with you stand in the presence of the Tent of Testimony.