Moses
Exodus 40:21ESV·traditional attribution

And he brought the ark into the tabernacle and set up the veil of the screen, and screened the ark of the testimony, as the LORD had commanded Moses.

Matthew Henry Presbyterian @wholebiblehenry

When the tabernacle and the furniture of it were prepared, they did not put off the rearing of it till they came to Canaan, though they now hoped to be there very shortly; but, in obedience to the will of God, they set it up in the midst of their camp, while they were in the wilderness.

Commenting on Exodus 40:16-33

John Gill Reformed Baptist @doctorgill

And he set the bread in order upon it before the Lord,.... The shewbread, the twelve cakes of it, in two rows, six in a row: as the Lord had commanded Moses: Exo 25:30.

Keil & Delitzsch Lutheran @keilanddelitzsch

Exo 40:20-21 Arrangement of the ark. “He took and put the testimony into the ark.” העדוּת does not mean “the revelation, so far as it existed already, viz., with regard to the erection of the sanctuary and institution of the priesthood (ch.

Commenting on Exodus 40:20-21