Interesting argument by Derek Prince about tithing.
We often think of tithing as an Old Testament idea, and many people argue that it is not Christian right along with the sacrificial laws that were only in effect for a time and were fulfilled in Christ. Yet the first indicator for the tithe comes from Abraham. Still obviously from the Old Testament, Genesis 14:17-20 tell how Abraham received a blessing from the King of Salem, called Melchizedek and a priest of God Most High. In response to that blessing (which accompanied a meal of bread and wine), Abraham gave him a tenth, a tithe, of all his spoils.
This event takes on more significance when we read in Psalm 110 about the coming Messiah who is called “a priest forever in the order of Melchizedek.” Who is this priest who will be established forever? The author of Hebrews speaks in depth about the significance of this title in chapters 5, 6 and especially 7. Christ is this priest. He is our high priest who makes intercession with God the Father on our behalf. He has given us his richest blessings by laying his own life down for us to ensure that with him we would receive a rich inheritance of salvation, his righteousness, and eternal life.
And so, in essence, the author of Hebrews establishes a bridge. To Abraham God promised that he would be the father of a nation and that all nations would be blessed through him. What God promised was to bring about the Messiah, the savior of the world, through Abraham’s descendants. After receiving that promise, Abraham modeled paying a tithe to Melchizedek, a shadow of Christ who would come as our priest. It certainly makes sense to me that as Christians we stand with Abraham as he receives that promise, the promise that we have seen fulfilled, and pay our honor to Christ for his rich blessings by sharing a part of our income.