Why are Parshiyos T'ruma and on not in Sefer Vayikra?

Question

Why is Parshas T'ruma through P'kuday in Sefer Sh'mos and not in Sefer Vayikra? It's all dealing with the building of the Mishkan and the vessels and the Bigday Kihuna. Isn't Sh'mos supposed to be about the redemtion from Egypt?

Answer 1

The Netziv in his introduction to Sh'mos says that the ultimate purpose is NOT the redemption from Egypt, but the building of the mishkan and subsequent dwelling of the Shekhina. Remember, the exodus itself happens relatively soon in the sefer, while matan torah and the mishkan take up a much larger portion.

Answer 2

The book of Exodus ends with "as God's presence was with them, for all their travels." The Ramban explains that they didn't achieve full redemption from Egypt until that point. Now they had a post-Egyptian purpose and identity.