Judah acquired ¹  a wife for Er his firstborn; her name was Tamar.

Tamar was told, ¹  “Look, your father-in-law is going up ²  to Timnah to shear his sheep.”

Then Judah said to his daughter-in-law Tamar, “Live as a widow in your father’s house until Shelah my son grows up.” For he thought, ¹  “I don’t want him to die like his brothers.” ²  So Tamar went and lived in her father’s house.

Then they attacked En Mishpat (that is, Kadesh) again, ¹  and they conquered all the territory of the Amalekites, as well as the Amorites who were living in Hazazon Tamar.

After three months Judah was told, ¹  “Your daughter-in-law Tamar has turned to prostitution, ²  and as a result she has become pregnant.” ³  Judah said, “Bring her out and let her be burned!”

Then Judah said to Onan, “Have sexual relations with ¹  your brother’s wife and fulfill the duty of a brother-in-law to her so that you may raise ²  up a descendant for your brother.” ³ 

But Onan knew that the child ¹  would not be considered his. ²  So whenever ³  he had sexual relations with ⁴  his brother’s wife, he withdrew prematurely ⁵  so as not to give his brother a descendant.

He turned aside to her along the road and said, “Come on! I want to have sex with you.” ¹  (He did not realize ²  it was his daughter-in-law.) She asked, “What will you give me in exchange for having sex with you?” ³ 

Judah recognized them and said, “She is more upright ¹  than I am, because I wouldn’t give her to Shelah my son.” He did not have sexual relations with her ²  again.

So she removed her widow’s clothes and covered herself with a veil. She wrapped herself and sat at the entrance to Enaim which is on the way to Timnah. (She did this because ¹  she saw that she had not been given to Shelah as a wife, even though he had now grown up.) ²