1Yahweh said to Moses, “Now you shall see what I will do to Pharaoh, for by a strong hand he shall let them go, and by a strong hand he shall drive them out of his land.”
2God spoke to Moses, and said to him, “I am Yahweh. 3I appeared to Abraham, to Isaac, and to Jacob, as God Almighty; but by my name Yahweh I was not known to them. 4I have also established my covenant with them, to give them the land of Canaan, the land of their travels, in which they lived as aliens. 5Moreover I have heard the groaning of the children of Israel, whom the Egyptians keep in bondage, and I have remembered my covenant. 6Therefore tell the children of Israel, ‘I am Yahweh, and I will bring you out from under the burdens of the Egyptians, and I will rid you out of their bondage, and I will redeem you with an outstretched arm, and with great judgments. 7I will take you to myself for a people. I will be your God; and you shall know that I am Yahweh your God, who brings you out from under the burdens of the Egyptians. 8I will bring you into the land which I swore to give to Abraham, to Isaac, and to Jacob; and I will give it to you for a heritage: I am Yahweh.’”
9Moses spoke so to the children of Israel, but they didn’t listen to Moses for anguish of spirit, and for cruel bondage.
10Yahweh spoke to Moses, saying, 11“Go in, speak to Pharaoh king of Egypt, that he let the children of Israel go out of his land.”
12Moses spoke before Yahweh, saying, “Behold, the children of Israel haven’t listened to me. How then shall Pharaoh listen to me, when I have uncircumcised lips?” 13Yahweh spoke to Moses and to Aaron, and gave them a command to the children of Israel, and to Pharaoh king of Egypt, to bring the children of Israel out of the land of Egypt.
14These are the heads of their fathers’ houses. The sons of Reuben the firstborn of Israel: Hanoch, and Pallu, Hezron, and Carmi; these are the families of Reuben. 15The sons of Simeon: Jemuel, and Jamin, and Ohad, and Jachin, and Zohar, and Shaul the son of a Canaanite woman; these are the families of Simeon. 16These are the names of the sons of Levi according to their generations: Gershon, and Kohath, and Merari; and the years of the life of Levi were one hundred thirty-seven years. 17The sons of Gershon: Libni and Shimei, according to their families. 18The sons of Kohath: Amram, and Izhar, and Hebron, and Uzziel; and the years of the life of Kohath were one hundred thirty-three years. 19The sons of Merari: Mahli and Mushi. These are the families of the Levites according to their generations. 20Amram took Jochebed his father’s sister to himself as wife; and she bore him Aaron and Moses. The years of the life of Amram were one hundred thirty-seven years. 21The sons of Izhar: Korah, and Nepheg, and Zichri. 22The sons of Uzziel: Mishael, Elzaphan, and Sithri. 23Aaron took Elisheba, the daughter of Amminadab, the sister of Nahshon, as his wife; and she bore him Nadab and Abihu, Eleazar and Ithamar. 24The sons of Korah: Assir, Elkanah, and Abiasaph; these are the families of the Korahites. 25Eleazar Aaron’s son took one of the daughters of Putiel as his wife; and she bore him Phinehas. These are the heads of the fathers’ houses of the Levites according to their families. 26These are that Aaron and Moses to whom Yahweh said, “Bring out the children of Israel from the land of Egypt according to their armies.” 27These are those who spoke to Pharaoh king of Egypt, to bring out the children of Israel from Egypt. These are that Moses and Aaron.
28On the day when Yahweh spoke to Moses in the land of Egypt, 29Yahweh said to Moses, “I am Yahweh. Tell Pharaoh king of Egypt all that I tell you.”
30Moses said before Yahweh, “Behold, I am of uncircumcised lips, and how shall Pharaoh listen to me?”
Isaac was the son of promise to Abraham and Sarah, and the half-brother of Ishmael (who became the father of the Arab people) and the father of Esau (from whom came the Edomites) and Jacob. Isaac was born of a mother beyond childbearing age by a miracle of Yahweh, and was a focus of the testing of Abraham and Sarah, his parents.
The name Isaac means "to laugh, or he laughs," which is based on the response of Sarah to Yahweh's statement to Abraham that she was to bear a son. Sarah was hiding out of sight when this announcement was made by the Angel of Yahweh, and upon hearing this statement, she laughed, which she denied later before the angel. Such an idea was considered impossible but happened as promised by the heavenly visitor. Later, Abraham's faith was tested when God commanded him to sacrifice his only son, Isaac. He followed through with this command of God but received him back alive, since Yahweh kept him from doing so, declaring that now He knew by experience (see the meaning of Hebrew yada') that Abram did not withhold his son.
Later in Isaac's life, he married Rebekah, who bore him Jacob (biography) and Esau (his favorite), and was tricked by Jacob and Rebekah into giving his younger son Jacob his blessing.
Isaac was the only son of Abraham and Sarah, a half-brother of Ishmael and father of Esau and Jacob. Isaac was born when both of his parents were very old, the circumstances surrounding his birth being a test of their faith. The meaning of Isaac's name (“he laughs”) is explained by the fact that Abraham laughed when he was told a son would be born to him at the age of a hundred. Abraham's faith was further tested when he was told to sacrifice Isaac but was stopped at the last moment from carrying out this instruction.
See also Biographies of Bible Characters, People and Characters in the Bible.