It shall be, that the firstborn whom she bears shall continue in the name of his brother who is deceased, so that his name will not be blotted out of Israel.
But Onan knew that the descendant would not be his, so when he had relations with his brother’s wife, he let his semen go on the ground, so that he would not give a descendant to his brother.
The Lord will not spare him; rather the anger of the Lord and His jealousy will smolder against that man. All the curses that are written in this book will rest on him, and the Lord will blot out his name from under heaven.