Tithing is clearly a Jewish tradition which according to Bible was commanded by God. It is more like their national taxation system.

Long before the establishment of the law, Abraham was cited paying tithe to Melchizedek in the Bible but according to history, it is the usual practice in the ancient kingdoms that were in the time of Abraham.

Tax is paid to the one that owns the law that governs you. Abraham had the opportunity to meet with the rulership of Salem (an unrecognized kingdom) who represented He that owned the law that governs the kingdom not built by men; he chose to pay the tithe of all things to him showing that that is where his real command comes from - this is a spiritual principle that can be tapped into. By virtue of it, God proved himself and took personal anything that concerned Abraham.

continue reading via https://rhemaformula.com/tithe/