"Because the entire being of the one who indulges in this practice is de-based and polluted by his own personal act it is also called "self-pollution." It is also called "Onanism," because for a similar offence, nearly four thousand years ago, God punished Onan with death (Genesis xxxviii, 3-10). This sin is also known by another name, and is called "masturbation," a word which is made from two Latin words which mean "To pollute by the hand."
thats what part of the artical says
now i just got my NIV bible out and its talking about how God told him to have sex with his brothers wife but he spilled his seman on the ground because he knew it wouldent be his. . . . . . God smote him because he pourpusly aimed his "baby makers" onto the ground so as not to reproduce with his brothers wife, not because he manually masterbated (for all we know he was in the proses of sex at the time and he didnt masterbate"