Mediator/Priest

Mediator

1 Tim. 2:5 - For there is one God, and there is one mediator between God and men, the man Christ Jesus

Heb. 9:15 - [Jesus] is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant.

Heb. 12:22-24 - 22 But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to innumerable angels in festal gathering, 23 and to the assembly[ of the firstborn who are enrolled in heaven, and to God, the judge of all, and to the spirits of the righteous made perfect, 24 and to Jesus, the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel.

Priest

Ps. 110:4 - The Lord has sworn and will not change his mind, “You are a priest forever after the order of Melchizedek.”

Heb. 

2:17 - Therefore he had to be made like his brothers in every respect, so that he might become a merciful and faithful high priest in the service of God, to make propitiation for the sins of the people.

3:1 - Therefore, holy brothers, you who share in a heavenly calling, consider Jesus, the apostle and high priest of our confession...

4:14-16 - 14 Since then we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast our confession. 15 For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin. 16 Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.

5:5-6 - So also Christ did not exalt himself to be made a high priest, but was appointed by him who said to him, “You are my Son, today I have begotten you”...as he says also in another place, “You are a priest forever, after the order of Melchizedek.” (See also, Heb, 5:10, 6:20; 7:1-13:11)