John Calvin Commentary Deuteronomy 29:2

"And Moses called unto all Israel, and said unto them, Ye have seen all that Jehovah did before your eyes in the land of Egypt unto Pharaoh, and unto all his servants, and unto all his land;" — Deuteronomy 29:2 (ASV)

And Moses called unto all Israel. This passage also may be suitably referred to the preface of the Law, since its purpose is to recommend it, and to instruct and prepare the people’s minds to be teachable. It begins with the divine blessings, which they had experienced both in their exodus and in their forty years’ wanderings; for it would have been the height of wickedness and ingratitude not to devote themselves to a Deliverer who had dealt so graciously with them. And surely it was an immeasurable sign of His paternal love for them, that He set Himself against so very powerful a king for the sake of His servants. Finally, so that there would be no question about their deliverance, he elaborates on the power which God displayed in it, in magnificent terms of praise befitting its dignity.