The conclusion of the Hebrews passage on tithing is verse 11: “Therefore, if perfection were through the Levitical priesthood (for under it the people received the law), what further need was there that another priest should rise according to the order of Melchizedek, and not be called according to the order of Aaron?”
By contrast, the New Covenant addresses the Old Covenant Law this way: “By means of his flesh he abolished the enmity, the Law of commandments consisting in decrees, that he might create the two peoples in union with himself into one new man and make peace.” (Ephesians 2:15)
This was speaking to the priests, not the people. It’s manipulative to tell the people that this passage is commanding them to give their money to the pastor/priest.
And you shall eat before the LORD your God, in the place where He chooses to make His name abide, the tithe of your grain and your new wine and your oil, of the firstborn of your herds and your flocks, that you may learn to fear the LORD your God always. Deuteronomy 14:23
Even the Malachi 3 section, which we now understand is commanding the priests, “Bring all the tithes into the storehouse, That there may be food in My house.” This is about helping others celebrate God, even if they were too poor to chip in for the food: being broke is no excuse. This is consistent with Deuteronomy 14.
The typical tithe-funded church budget (and I know whereof I write) spends between 60% and 90% of those tithes on salaries and building expenses. Therefore even if the Old Covenant law of tithing applied in the New Covenant, it does not apply in the way that we’re applying it.
Note: there is, of course, an exception, but that only applies when the parents are old and cannot provide for themselves.
The idea that some people (“clergy”) are supposed to do the work of the gospel: visit the sick, teach the Word, and so on, while other people (“laity”) are supposed to pay them to do that work is not found in the pages of Scripture.
The truth is that I don’t owe God a tenth of my increase; I owe him all of me: everything I own, all that I am.