Hebrews 7

It is important for us to have a priest, someone who represents us before God, since we aren't qualified to represent ourselves. According to the law Jesus wasn't able to be the priest since he was from the tribe of Judah not Levi.

Jesus is, however, a different kind of priest, a superior one. He is superior in several respects:

• He does not require a tribal genealogy.
• He is of the order of Melchizedek, who is greater than Abraham and therefore Levi, because Abraham paid him a tithe (Heb. 7:4-10).
• Jesus brings a greater hope (Heb. 7:19).
• He does not die, but remains eternally a priest. (Heb. 7:23). He will never need to be replaced.
  
• He is able to save completely those who come to God (Heb. 7:25).
• He does not sin. Therefore he doesn't need to offer sacrifices for himself before he sacrifices for people (Heb. 7:27).

The tithing argument is built on the belief that tithing represents the acknowledgment of the greatness of the one who receives the tithe. This, in and of itself, is a good argument for tithing today. How do you acknowledge the greatness of God in tangible ways?