Gen.38.10

And the thing which he did displeased the LORD: wherefore he slew him also.

Gen.38.10

GOD was much offended by what he did and also took his life.

Gen.38.10

And the thing which he did displeased the LORD; therefore He killed him also.

Gen.38.10

But the LORD considered it a wicked thing for Onan to deny a child to his dead brother. So the LORD took Onan's life, too.