Why do some people tithe and some don't?

QUESTION on Social Media:

If the just shall live by faith, and not the law, why should same just live by tithing? Can someone explain what is really going on to the faithful.

My ANSWER:

I can answer you by saying that the ‘faithful’ you mention fail to rightly divide the scriptures, 2Tim.2:15. If they study the bible in the correct context, they will learn that tithing was an instruction for Israel under the prophetic Kingdom program* (which is currently suspended).

The tithe is an instruction exclusively to Israel (to the Jews). It formed part of their law and the offering of a 10th of their harvest and other things was to honour God and thank Him for His providence, (Leviticus 27:30; Numbers 18:26; Deuteronomy 14:24; 2 Chronicles 31:5). This program of Law has been put on hold in our age. Paul says that we are no longer under the law, but under grace (Rom.6:14).

2 Corinthians 9:7 Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver.

The way to give today is by giving according to the working in your heart. You give freely by a choice, by that which is according to your heart, not grudgingly or under compulsion. God recognizes your giving if you are doing it cheerfully and because you want to, not because you have to or are commanded to do so.

If your priest or pastor is teaching you that tithing is required in order to please God and get blessing from Him, or that it is a law for church members to give a 10th or more, then your priest or pastor is either deceived and does not know the truth, or he is extorting you.

Conclusion: The tithe is obsolete in this grace age. It is not a command to the Body of Christ. The way we give is cheerfully and without grudge, and certainly not under compulsion. We give because we want to. And if we don’t give, we do not come under condemnation by God and should not condemn ourselves either. Let your giving be from a heart of love or desire to want to, else don’t give and have peace with that.

More details here.