In the series “12 reasons why Melchizedek was actually the pre-incarnate Word of God” the following article is reason # 12.
The clearest and most straightforward reason to believe that Melchizedek was actually the pre-incarnate Word of God is because the text expressly calls for this conclusion.
Hebrews 7:6,13-14 says:
6 But he [i.e. Melchizdek] whose descent is not counted from them received tithes of Abraham, and blessed him that had the promises…13 For he [i.e. Melchizdek] of whom these things are spoken pertaineth to another tribe, of which no man gave attendance at the altar. 14 For it is evident that our Lord sprang out of Juda; of which tribe Moses spake nothing concerning priesthood.
In verse 13, the person of whom “these things” are spoken of is clearly Melchizedek. For from Hebrews 6:20 (where the section on Melchizedek begins) until Hebrews 7:13 only one thing is explicitly said about Jesus–namely, that He is the high priest after the order of Melchizedek. On the other hand, verses 1-12 of Hebrews 7 are all attributed directly to Melchizedek. Yet, verse 14 goes on to describe this person–not as Melchizedek–but as “our Lord” who “sprang out of Juda.” Therefore, in the Writer’s mind, there is no functional distinction between Melchizedek and our Lord Jesus Christ, “the Lion of the tribe of Judah” (Revelation 5:5).