Genesis 38:3

So she conceived and bore a son, and he called his name Er.

Surrounding context

38:2 And Judah saw there a daughter of a certain Canaanite whose name was Shua, and he married her and went in to her.

38:3 So she conceived and bore a son, and he called his name Er.

38:4 She conceived again and bore a son, and she called his name Onan.

Translation and sources