“Behold, I send an angel before you to guard you on the way and to bring you to the place that I have prepared. Pay careful attention to him and obey his voice; do not rebel against him, for he will not pardon your transgression, for my name is in him.
“But if you carefully obey his voice and do all that I say, then I will be an enemy to your enemies and an adversary to your adversaries.
“When my angel goes before you and brings you to the Amorites and the Hittites and the Perizzites and the Canaanites, the Hivites and the Jebusites, and I blot them out, you shall not bow down to their gods nor serve them, nor do as they do, but you shall utterly overthrow them and break their pillars in pieces. You shall serve the Lord your God, and he will bless your bread and your water, and I will take sickness away from among you. None shall miscarry or be barren in your land; I will fulfill the number of your days. I will send my terror before you and will throw into confusion all the people against whom you shall come, and I will make all your enemies turn their backs to you. And I will send hornets before you, which shall drive out the Hivites, the Canaanites, and the Hittites from before you. I will not drive them out from before you in one year, lest the land become desolate and the wild beasts multiply against you. Little by little I will drive them out from before you, until you have increased and possess the land. And I will set your border from the Red Sea to the Sea of the Philistines, and from the wilderness to the Euphrates, for I will give the inhabitants of the land into your hand, and you shall drive them out before you. You shall make no covenant with them and their gods. They shall not dwell in your land, lest they make you sin against me; for if you serve their gods, it will surely be a snare to you.”
Then he said to Moses, “Come up to the Lord, you and Aaron, Nadab, and Abihu, and seventy of the elders of Israel, and worship from afar. Moses alone shall come near to the Lord, but the others shall not come near, and the people shall not come up with him.”
Moses came and told the people all the words of the Lord and all the rules. And all the people answered with one voice and said, “All the words that the Lord has spoken we will do.” And Moses wrote down all the words of the Lord. He rose early in the morning and built an altar at the foot of the mountain, and twelve pillars, according to the twelve tribes of Israel. And he sent young men of the people of Israel, who offered burnt offerings and sacrificed peace offerings of oxen to the Lord. And Moses took half of the blood and put it in basins, and half of the blood he threw against the altar. Then he took the Book of the Covenant and read it in the hearing of the people. And they said, “All that the Lord has spoken we will do, and we will be obedient.” And Moses took the blood and threw it on the people and said, “Behold the blood of the covenant that the Lord has made with you in accordance with all these words.”
Then Moses and Aaron, Nadab, and Abihu, and seventy of the elders of Israel went up, and they saw the God of Israel. There was under his feet as it were a pavement of sapphire stone, like the very heaven for clearness. And he did not lay his hand on the chief men of the people of Israel; they beheld God, and ate and drank.
Exodus 23:20-24:11 ESV