And put the testimony into the ark - That is, the two tables on which the ten commandments had been written. See Exodus 25:16. The ark, the golden table with the shew-bread, the golden candlestick, and the golden altar of incense, were all in the tabernacle, within the veil or curtains, which served as a door, Exodus 40:22, Exodus 40:24, Exodus 40:26. And the altar of burnt-offering was by the door, Exodus 40:29. And the brazen laver, between the tent of the congregation and the brazen altar, Exodus 40:30; still farther outward, that it might be the first thing the priests met with when entering into the court to minister, as their hands and feet must be washed before they could perform any part of the holy service, Exodus 40:31, Exodus 40:32. When all these things were thus placed, then the court that surrounded the tabernacle, which consisted of posts and hangings, was set up, Exodus 40:33.

as the Lord

Exodus 40:19 And he spread abroad the tent over the tabernacle, and put the covering of the tent above on it; as the LORD commanded Moses.

Exodus 30:19,20 For Aaron and his sons shall wash their hands and their feet thereat...

Psalm 73:19 How are they brought into desolation, as in a moment! they are utterly consumed with terrors.

Exodus
The book of Exodus--so named in the Greek version from the march of Israel out of Egypt--opens upon a scene of oppression very different from the prosperity and triumph in which Genesis had closed. Israel is being cruelly crushed by the new dynasty which has arisen in Egypt (i.) and the story of the book is the story of her redemption. Ultimately it is Israel's God that is her redeemer, but He operates largely by human means; and the first step is the preparation of a deliverer, Moses, whose parentage, …
John Edgar McFadyen—Introduction to the Old Testament