1. God saves us by His grace.

Exodus 7:14-18 (ESV)

14 Then the Lord said to Moses, “Pharaoh's heart is hardened; he refuses to let the people go. 15 Go to Pharaoh in the morning, as he is going out to the water. Stand on the bank of the Nile to meet him, and take in your hand the staff that turned into a serpent. 16 And you shall say to him, ‘The Lord, the God of the Hebrews, sent me to you, saying, “Let my people go, that they may serve me in the wilderness.” But so far, you have not obeyed. 17 Thus says the Lord, “By this you shall know that I am the Lord: behold, with the staff that is in my hand I will strike the water that is in the Nile, and it shall turn into blood. 18 The fish in the Nile shall die, and the Nile will stink, and the Egyptians will grow weary of drinking water from the Nile.”’”

Exodus 11:4-6 (ESV)

4 So Moses said, “Thus says the Lord: ‘About midnight I will go out in the midst of Egypt, 5 and every firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the slave girl who is behind the handmill, and all the firstborn of the cattle. 6 There shall be a great cry throughout all the land of Egypt, such as there has never been, nor ever will be again.

Exodus 12:1-13 (ESV)

12 The Lord said to Moses and Aaron in the land of Egypt, 2 “This month shall be for you the beginning of months. It shall be the first month of the year for you. 3 Tell all the congregation of Israel that on the tenth day of this month every man shall take a lamb according to their fathers' houses, a lamb for a household. 4 And if the household is too small for a lamb, then he and his nearest neighbor shall take according to the number of persons; according to what each can eat you shall make your count for the lamb. 5 Your lamb shall be without blemish, a male a year old. You may take it from the sheep or from the goats, 6 and you shall keep it until the fourteenth day of this month, when the whole assembly of the congregation of Israel shall kill their lambs at twilight.[a]

7 “Then they shall take some of the blood and put it on the two doorposts and the lintel of the houses in which they eat it. 8 They shall eat the flesh that night, roasted on the fire; with unleavened bread and bitter herbs they shall eat it. 9 Do not eat any of it raw or boiled in water, but roasted, its head with its legs and its inner parts. 10 And you shall let none of it remain until the morning; anything that remains until the morning you shall burn. 11 In this manner you shall eat it: with your belt fastened, your sandals on your feet, and your staff in your hand. And you shall eat it in haste. It is the Lord's Passover. 12 For I will pass through the land of Egypt that night, and I will strike all the firstborn in the land of Egypt, both man and beast; and on all the gods of Egypt I will execute judgments: I am the Lord. 13 The blood shall be a sign for you, on the houses where you are. And when I see the blood, I will pass over you, and no plague will befall you to destroy you, when I strike the land of Egypt.

Exodus 24:3-8 (ESV)

3 Moses came and told the people all the words of the Lord and all the rules.[a] And all the people answered with one voice and said, “All the words that the Lord has spoken we will do.” 4 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. 5 And he sent young men of the people of Israel, who offered burnt offerings and sacrificed peace offerings of oxen to the Lord. 6 And Moses took half of the blood and put it in basins, and half of the blood he threw against the altar. 7 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.” 8 And Moses took the blood and threw it on the people and