1At that time, Judah went down from his brothers, and visited a certain Adullamite, whose name was Hirah. 2There, Judah saw the daughter of a certain Canaanite man named Shua. He took her, and went in to her. 3She conceived, and bore a son; and he named him Er. 4She conceived again, and bore a son; and she named him Onan. 5She yet again bore a son, and named him Shelah. He was at Chezib when she bore him. 6Judah took a wife for Er, his firstborn, and her name was Tamar. 7Er, Judah’s firstborn, was wicked in Yahweh’s sight. So Yahweh killed him. 8Judah said to Onan, “Go in to your brother’s wife, and perform the duty of a husband’s brother to her, and raise up offspring for your brother.” 9Onan knew that the offspring wouldn’t be his; and when he went in to his brother’s wife, he spilled his semen on the ground, lest he should give offspring to his brother. 10The thing which he did was evil in Yahweh’s sight, and he killed him also. 11Then Judah said to Tamar, his daughter-in-law, “Remain a widow in your father’s house, until Shelah, my son, is grown up;” for he said, “Lest he also die, like his brothers.” Tamar went and lived in her father’s house.
12After many days, Shua’s daughter, the wife of Judah, died. Judah was comforted, and went up to his sheep shearers to Timnah, he and his friend Hirah, the Adullamite. 13Tamar was told, “Behold, your father-in-law is going up to Timnah to shear his sheep.” 14She took off the garments of her widowhood, and covered herself with her veil, and wrapped herself, and sat in the gate of Enaim, which is on the way to Timnah; for she saw that Shelah was grown up, and she wasn’t given to him as a wife. 15When Judah saw her, he thought that she was a prostitute, for she had covered her face. 16He turned to her by the way, and said, “Please come, let me come in to you,” for he didn’t know that she was his daughter-in-law.
She said, “What will you give me, that you may come in to me?”
17He said, “I will send you a young goat from the flock.”
She said, “Will you give me a pledge, until you send it?”
18He said, “What pledge will I give you?”
She said, “Your signet and your cord, and your staff that is in your hand.”
He gave them to her, and came in to her, and she conceived by him. 19She arose, and went away, and put off her veil from her, and put on the garments of her widowhood. 20Judah sent the young goat by the hand of his friend, the Adullamite, to receive the pledge from the woman’s hand, but he didn’t find her. 21Then he asked the men of her place, saying, “Where is the prostitute, that was at Enaim by the road?”
They said, “There has been no prostitute here.”
22He returned to Judah, and said, “I haven’t found her; and also the men of the place said, ‘There has been no prostitute here.’” 23Judah said, “Let her keep it, lest we be shamed. Behold, I sent this young goat, and you haven’t found her.”
24About three months later, Judah was told, “Tamar, your daughter-in-law, has played the prostitute. Moreover, behold, she is with child by prostitution.”
Judah said, “Bring her out, and let her be burned.” 25When she was brought out, she sent to her father-in-law, saying, “I am with child by the man who owns these.” She also said, “Please discern whose these are—the signet, and the cords, and the staff.”
26Judah acknowledged them, and said, “She is more righteous than I, because I didn’t give her to Shelah, my son.”
He knew her again no more. 27In the time of her travail, behold, twins were in her womb. 28When she travailed, one put out a hand, and the midwife took and tied a scarlet thread on his hand, saying, “This came out first.” 29As he drew back his hand, behold, his brother came out, and she said, “Why have you made a breach for yourself?” Therefore his name was called Perez. 30Afterward his brother came out, who had the scarlet thread on his hand, and his name was called Zerah.
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.