Rebuttal of Tom Brown Ministries on Tithing
http://www.tbm.org/is_tithing_new_testament.htm
Brown: Tithing began before the law was introduced.
Kelly: The fact that tithing existed before the law proves nothing. Idolatry, child sacrifice and temple prostitution also existed before the law in all lands of Abraham’s day, including Canaan. The fact that something is very old and very common does not make it an eternal moral principle.
Brown: The Law simply regulated the tithe.
Kelly: No. The tithe of Abraham and Jacob had its definition from pagan Babylon and was not the same thing as a holy tithe of ONLY FOOD from a holy land miraculously increased by Yahweh and returned to Yahweh. The two definitions are very different.
Brown: Abraham tithed to Melchizedek, 400 years before the time of Moses and the Law,
Kelly: Why? The Bible does not say that Abraham did it voluntarily. There is just as much biblical evidence from Genesis 14:21 that he gave in obedience to common Canaanite tradition to his local priest-king, or as a passage tax.