The OT Law NEVER defined the tithe as 1/10 of income. In fact, it was expressly defined as being 1/10 of the crops and livestock produced that year. We are not under the Law, and even if we were, the tithe was NEVER income.
You may have noticed that preachers who promote the tithing heresy will read from Malachi, which never DEFINES the tithe, and then they go on to give their own definition while ignoring how the BIBLE defined it.
When confronted with this, most of you tithe pimps will claim that it was an agrarian society back then with a barter economy and no money. That’s an outright LIE. In Genesis 23:16, 500+ years BEFORE the Law, we are told by the BIBLE that Abraham bought the cave of Machpelah for MONEY.
Thus we must understand that income tithing as it is taught today is a doctrine and commandment of men.

The rationalization that ministry costs money does not justify LYING to God’s people and telling them that they will be cursed if they do not obey a command which God never gave to us even under the Law.

So give freely, but don’t let anyone tell you that you HAVE to tithe.