To the OP, and to those doubters of our responsibility to support the local church:
The tithe is not specifically supported in the New Testament, but there is nonetheless ample support for giving to the local church for the payment to the pastor, and for the continuing works of the body of Christ.
1 Corinthians 16, NASB
2 On the first day of every week each one of you is to put aside and save, as he may prosper, so that no collections be made when I come.
1 Timothy 5
18 For the Scripture says, "YOU SHALL NOT MUZZLE THE OX WHILE HE IS THRESHING," and "The laborer is worthy of his wages."
2 Corinthians 9
7 Each one must do just as he has purposed in his heart, not grudgingly or under compulsion, for God loves a cheerful giver.
I believe the Old Testament tithe is an excellent guide for minimum giving, but young people just starting out, singly or in marriage, may struggle with meeting that level of obligation, and it isn't to be an "obligation" at any rate. Give what is comfortable, give cheerfully, and give as you believe God has led you. But give. Of the necessity to do so, there is no doubt.
Is "comfortable" a matter of faith? If not, it is sin.
Romans 14:23 (KJV)
[SUP]23 [/SUP] And he that doubteth is damned if he eat, because he eateth not of faith: for whatsoever is not of faith is sin.
Anyone is probably far more innocent to just keep their money in their pocket, rather than make an appearance of pleasing God with a tip to him.
As for me, I have read enough just from Hebrews 7 to understand the importance of submitting what belongs to God to God. What is owed to Hi goes back in history beyond the Law to Abraham, who had nothing to do with the law of Moses. He tithed to Melchizedek, making that man greater than Abraham.
If mortal men of the family of Aaron and his sons could be sanctioned by God to be priests and receive tithes, according to Heb 7 our eternal High Priest Jesus deserves no less, who still collects tithes. That is given to support the concept of supporting his gospel on earth. In the same way the priests and Levites in general, who were forbidden to own land, who had to be sustained by the other tribes, so should ministries of Jesus' priesthood here on earth be supported. THere is no alternative that is supported in scriptures.
In the matter of free-will offerings, a wholly different topic, of course that is linked to "comfortable" and gladness of heart that one is doing something good.
I will say I have witnessed hundreds of people coming to the church for financial help, all related to refusal to tithe. There simply is no scriptural promise of financial blessing without tithing. Giving an offering without yielding the tithe in effect requires "giving" the offering out of what should be the tithe. That's like "giving" the Red Cross a donation while not paying a creditor his monthly due. That makes the creditor (your landlord) the donor against his will.
Whatever you "donate" aside from what the 10% tithe was to be, but not payed, is all cursed as far as God is concerned. It is not testing God as the prophet Malachi said, but an offering from a robber of God, giving what the robber has robbed, not what the robber was blessed with.
Want to be blessed? Stop robbing God of the tithe. Help support a local ministry of the gospel. Then be blessed enough to give offerings according to your blessings after the tithe. Those combined principles propel the believer into the exciting economic system of the Kingdom of Heaven. The alternative is reliance upon the world system which is lorded over by the Devil, Satan. He will see to it that your wealth, whatever that is, and any investments are taken over by powerful greedy people somewhere up or down your line.
Refusal to tithe is a mark of fear and distrust of God's word. Handing over some of your paycheck is very easy compared to handing a part of your being, your life, over to the Lord. If we can't tithe, how can we be truly submitted to the Lord? If God has no influence over the bank balance, how can we say he is truly welcome as Lord?
High Priest Jesus awaits our tithes. Pay them to the earthly priests in the sanctuary from which you are blessed.