Quote from fhl:
Someone asked for new testament passages on tithing.
Here's one. Mathew 23, verse 23.
Woe unto you, scribes and Pharisees, hypocrites! for ye pay tithe of mint and anise and cummin, and have omitted the weightier matters of the law, judgment, mercy, and faith: these ought ye to have done, and not to leave the other undone. (ed note, it says not to leave the "tithing" undone.)
Another: Hebrews 7, verses 1 to 10.
This passage explains how Abraham paid tithes to Melchizedek, who is a type of Christ, before the law. The Levitical priesthood had not been enacted yet, so the tithe was not meant solely for that purpose. Also, I don't have a passage to site, but I believe that priests in the old covenant were required to tithe to the higher priests. Jesus is our high priest, on the order of Melchizedek.
I admit this is pretty good. If I may add something, we could look at Abel's offering in Gen 4:4. True, it doesn't indicate how much but only that it was the first and best of his possession.
Matt 23 I wouldn't take to be an indication that tithing is a requirement under the new testament. This passage addresses the Hebrew pharisee's penchant for nitpicking/cherry picking the law and choosing what's important and what's not when God commands all making all important. But again, this is address to Hebrews only as that was their law.
But the passage in Hebrews was a good choice. At first I thought I may have overlooked something and would have to concede that tithing is still in force. But as I read on, a few verses, one in particular, called into question the notion of tithing under the NT.
Heb 7:12 For the priesthood being changed, there is made of necessity a change also of the law.
It's refering to Christ's office(Melchisedecian order) which supercedes the Levitical order and therefore the levital law of which is the ordinance of tithing. (Note: the ten commandments are not superceded because they were given before the levitical laws and establishment of the Levital order through Aaron. That leaves 603 laws that have been superceded.)
So while Abraham did give a tenth of spoil to a mysterious King (of whom Christ is said to be in the order of), you can't take that to mean anything more than an unrequired act of piety. Because the other incident of an offering before the Levitical law to do so (abel's), doesn't speak to the quantity, but the quality. Much like what is again echoed by Christ in the NT when refering to the poor woman's offering which happened to be all she had. Certainly more than a tenth. And that's why Paul goes on to say in Corithians that God loves a cheerful giver. In other words, one who does so willingly and out of reverence and love for God, and with an acknowledgement that the believer is but a steward of what he possesses because all come from God and all is God's.
To bring it full circle, is it wrong to give 10%? Depends on why you are doing it. Are you doing it thinking you're fulfilling some desire of God for you to do so? If so then yes, it's ethically wrong and perhaps morally. Ethically because God does not command you to do so. He doesn't command you to follow any of the levitical law. By following just one of the 603(613-10commandments), you are saying that Christ's work on the Cross did not fulfil the law. That would make following the tithe ordinance, morally wrong.
So what's optimal? Give when you see a need. Give of your time, your resources. Give expecting nothing in return. No blessing, no repayment. Give because ultimately it isn't yours and you can't take it with you. Give as a servant of God to address the needs of other servants of God first and to be a light to those who do not know His name second. If it happens to be that at the end of the day, when taking account, you happen to have given 10%, then fine. You may find that sometimes you gave 50% or 25% or even 100%.