And she conceived again and bare a son and called him Onan.

Then said Judah unto Onan, go in to thy brother's wife and marry her, and stir up seed unto thy brother.

And when Onan perceived that the seed should not be his: therefore when he went into his brother's wife, he spilled it on the ground, because he would not give seed unto his brother.

The children of Judah: Er, Onan, Shelah, Perez and Sarah - but Er and Onan died in the land of Canaan. The children of Perez, Hezron, and Hamul.