15 And what we have said is even more clear if another priest like Melchizedek appears,
16 one who has become a priest not on the basis of a regulation as to his ancestry but on the basis of the power of an indestructible life.
17 For it is declared: “You are a priest forever, in the order of Melchizedek.” (Heb 7:15-17)

Sermon Main Points
1) There is a rival priest if another priest appears
2) There is a rival priest if another priest is not from Levi
3) There is a rival priest if another priest is like Melchizedek
4) Jesus is a rival priest because he has appeared
5) Jesus is a rival priest because he is not from Levi
6) Jesus is a rival priest because he is like Melchizedek