Terry The idea of "giving" to God is perhaps the most peculiar of all human ideas. God needs nothing and can make no use of something burned on an altar. The fable spinners, however, like to assure us God's nostrils can be pleased by the aroma of burnt oxen. The Physics of molecules and the distance from Earth to Heaven was much more (ignorant) simple in the old days.
The whole concept of blood sacrifice , the " sweet savour"(why do I always hear that expression in a Jamaican accent) is more revolting than the " shoot" that the ancient Jews found so terrible. At least a penis is harmless.