Guideline = compulsion. Since the tithe was grain, produce and livestock (not money, the Bible is clear on the distinction when the offer to buy back the tithe is given) we have no guideline as a NT believer.
Not true.. Abraham (as a non-Jew) paid tithes (according to Gen and Hebrews) and yet his tithes, which were prior to the Law, included things other than livestock and food. It was what he received via the his conquest to get Lot back after defeating the kings - his increase. Thus we find in the Law this same view of giving according to their increase.
The problem with people shouting - we are not under the Law, tend to forget the principle of the Tithe was before the Law, and it was even before Israel.
Also, the guidelines you are refering to (though not in Law but principle) are found in the NT very prominately in relation to Elders/Pastors. Paul tells us they are to taken care of and uses the OT Law to establish his point. We can note this as the Law in Num 18:21-24 tells us that how they (the OT priests) were taken care of, through the tithes. Pauls speaks back this very thing in saying.. does a soldier serve at his own expense?.. ect, in 1 Cor 9:4-14 and quotes the Law about muzzling the Ox while he is threshing.. and you see the two tied together in vss 13 and 14
1Co 9:13 Do ye not know that they which minister about holy things live of the things of the temple? and they which wait at the altar are partakers with the altar?
1Co 9:14 Even so hath the Lord ordained that they which preach the gospel should live of the gospel.
The first is speaking of the Law and through the tithes providing for those who are the ministers (priests) there, and vs 14 we see the Lord has ordained should be provided for by the guidelines. And Paul apparently did not make the distinction of being provided for as being crops or food, as he speaks often of monetary provisions.
The Law, vai the tithe is noted in this instance as still being our guideline. Again, My statement is that we should be operating on the tithe principle, not the tithing law. We are to give but sacrifically, joyfully, and out of love for God and His people, not minimumally. I beleve people are asking the wrong question when they ask, how much should I give to God? that typically reveals either a heart of greed or ignorance (having no knowledge). The question we should be asking is How much does God desire me to keep?
If we are Stewards and all things belong to God, then what you make is God's alone - all of it, not just 10%. We must ask the original owner how much we are to keep of His money, not how much should we give him.
BUT FOR LUKE - if that is where God has lead you, and you will continue to give as God has blessed you and leads you.. THEN PRAISE GOD and continue to do so.
Just my nickle in the bucket.