Deuteronomy 11:3
And his miracles, and his acts, which he did in the midst of Egypt unto Pharaoh the king of Egypt, and unto all his land; And his miracles, and his acts, which he did in the midst of Egypt unto Pharaoh the king of Egypt, and unto all his land;
The verse recalls the miracles and acts performed in the midst of Egypt against Pharaoh the king of Egypt and throughout all his land. Those lessons belong to the eleventh chapter of Deuteronomy, and with the eighth chapter they mean much and are of the greatest importance. Moses reminded Israel that their own eyes had seen all these great and mighty acts of the Lord.
This reminder came after he told them that their rebellion had several times led the Lord to purpose to destroy them and that earnest intercession had led God to graciously spare them. What they had witnessed was then used as a reason to keep all God's commandments commanded that day. The purpose was that they would be strong and go in and possess the land they were going to possess.
The lessons of the eighth and eleventh chapters on obedience to God's commandments and the consequences of disobedience apply as truly to God's people now as they did to Israel. They were given as verily to present believers as to the Israelites. The chapter's warning is illustrated by the fact that of the adults who left Egypt, only two entered Canaan while the rest died in the wilderness.