Charles Ellicott Commentary Exodus 29:46

"And they shall know that I am Jehovah their God, that brought them forth out of the land of Egypt, that I might dwell among them: I am Jehovah their God." — Exodus 29:46 (ASV)

They shall know ... — i.e., My subsequent care for them will prove me the same loving and all-powerful God whose help effected their deliverance from the bondage of Egypt.