For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Cheryl Loraditch
The teachers of the faith fill the role of the Levites which means they are supposed to give 10% to the high priest, and who is our high priest?; no body else but Yeshua. And He said, "Truly I tell you, whatever you did for one of the least of these brothers and sisters of mine, you did for me."- Matthew 25:40. Who are the least of these? The homeless and needy, of course.
Jennifer Rothnie
Actually, we all fill the role of Levites, not just the teachers of the faith (I Pet 2:9). This is because we all take part in the ministry and service of the Kingdom of God, regardless of our spiritual gifts or position within a specific church group (Eph 4:12). Teachers and pastors help equip us, but note that we are all doing the works of service (See parallel passage Num 4:46-47).
However, we are not bound to any specific rule of the tithe, and Christ is High Priest in the order of Melchizadek, not Aaron.
As such, we give and church groups should give as the Holy Spirit directs. Some of the principles that guide us in giving are:
Giving should be 'Cheerful', not out of duty or compulsion (II Cor 9:7)
Giving according to need: (Acts 4:34-35)
Don't give for accolades by men: (Matt 6:3, Mark 12:41-44)
Give for the aid of teachers, preachers, missionaries, etc: I Tim 5:17
Give for relief of other believers in emergencies: (I Cor 16:1-4, Acts 1:28-29)
This can be money, goods, time, etc. An individual may choose to apportion out finances/time/goods where he believes it will be the most effective, or give a sum over to another group to distribute. A church group should, with discernment, determine where received finances should best go to aid those in need (I Tim 5:9-10), support the ministry of the church at home and abroad, etc.