As the Lord commanded Moses, so Aaron laid it up before the testimony, to be kept. That is, before the ark of the testimony; when that was made, as it was in a little time after this, called the testimony, because it contained in it the law, which was a testimony or testification of the mind and will of God unto Israel, see
Exodus 25:16 the apostle says, the pot of manna was in the ark, Hebrews 9:4 that is, on one side of it,