Melchizedek and Jesus

Psalm 110
4 The LORD hath sworn, and will not repent, Thou art a priest for ever after the order of Melchizedek.

This post is about Melchizedek and Jesus.

First, Psalm 110, a Psalm of David, is prophetic, foretelling the coming of the Messiah.

Hebrews 7
1 For this Melchisedec, king of Salem, priest of the most high God, who met Abraham returning from the slaughter of the kings, and blessed him;
2 To whom also Abraham gave a tenth part of all; first being by interpretation King of righteousness, and after that also King of Salem, which is, King of peace;

Second, Melchizedek is a notably mysterious character in both the Old and New Testaments. He may be a type of the Holy Ghost. In this passage, the Paul explains to the Hebrews that Christ is superior to the Hebrew priests and the Levites. Melchizedek took tithes from Abraham, and Levi paid tithes to Abraham. The Hebrews, in turn, paid their tithes to the Priests. The priests and their Law, in effect, separated the Hebrews from God.

Christ, on the other hand, is of the order of Melchizedek and is therefore directly linked to God.

Two questions. First. Why did God make these connections between Jesus, Melchizedek, Abraham, David and the Hebrew priests? Second. How should we apply these passages to our humble, daily, Christian lives?

It looks like I have material for a few days of thoughtful meditation. I have no answers today....