This section has two parts that are similar in form to the relationship of chapters 25–30 and 35–39. In 40:1–16 the Lord gave Moses instructions about the arrangement of the various parts of the tabernacle and verses 17–33 record that those instructions were carried out.1
1 Hannah, J. D. (1985). Exodus. In J. F. Walvoord & R. B. Zuck (Eds.), The Bible Knowledge Commentary: An Exposition of the Scriptures (Vol. 1, p. 161). Wheaton, IL: Victor Books.