Tithe is from the Old Testament and only mentioned once in the New Testament. I believe Tithe was an act during the Feast. You brought something you enjoyed to the Feast and if the journey to the Feast was such a distance the your goods might spoil, you would sell them for something else or money. and then that was given to the Church ( body of believers) as your offering instead of your original gift.

I have heard it preached:
1. your finances will be cursed if you don’t tithe!
2. no wonder your life is so bad, you’re not tithing.

But tithe being of the old:
The parable Old wine in new bottles, & New cloth sewn onto old garments makes them weak. Jesus told his chosen few in the upper room, ( I’m telling you this so when it comes to pass you’ll know what’s going on, you’ll understand) I believe He’s talking about the New Testament taking the place of the Old and Do not mix them.

A letter from Paul, Gal 2:10 For as many as are of the works of the law are under the curse: for it is written, Cursed is every one that continueth not in all things which are written in the book of the law to do them.

You can chose either one, But do not mix them! I chose Grace . It’s a much better deal.

TITHE Word meaning “tenth,” used of the offering of a tenth for religious purposes. Abraham gave a tenth to Melchizedek, the priest-king (Gen. 14:18-20). The Israelites were required to give a tithe to the Levites (Num. 18:21, 24), and the Levites in turn were to give a tithe of the tithe to the priests (Num. 18:25-28). The tithe was taken from things like grain, fruits, and animals (Lev. 27:30-32). There is no command to tithe in the New Testament (cf. I Cor.16:2), but many Christians believe that the concept is a useful guide in their giving.