Hebrews 7:6

“But he whose descent is not counted from them, etc.] That is, Melchizedek, whose genealogy or pedigree is not reckoned from the Levites, nor from any from whom they descend; his lineal descent is not the same with theirs; and so did not receive tithes by any law, as they did, but by virtue of his superiority: received tithes of Abraham; not from the people, or his brethren, but from Abraham, the father of the people of Israel, and of Levi himself: and blessed him that had the promises; of a Son, and of the Messiah, that should spring from him, in whom all nations should be blessed, and of the land of Canaan, and of the blessings of grace and glory. This shows that Melchizedek had a descent,…”

“he whose descent is not counted from them--not from "the sons of Levi," as those "who receive the priesthood." This verse explains "without descent" (Greek, "genealogy" in both verses, Heb 7:3). He who needs not, as the Levitical priests, to be able to trace his genealogy back to Levi. received--Greek, "hath received tithes." blessed--Greek, "hath blessed." The perfect tense implies that the significance of the fact endures to the present time. him that had--"the possessor of the promises," Abraham's peculiar distinction and designation. Paul exalts Abraham in order still more to exalt Melchisedec. When Christ is the subject, the singular "promise" is used. "The promises" in the plural,…”

“But he whose descent is not counted from them - Melchizedek. The word “descent” is “pedigree” in the margin. The meaning is, that he was not “in the same genealogy” - μὴ γενεαλογούμενος mē genealogoumenos - he was not of the order of Levitical priests. That Melchizedek is meant there can be no doubt; at the same time, also, the thought is presented with prominence on which Paul so much insists, that he was of a different order from the Levitical priesthood. And blessed him - Blessed him as a priest of God; blessed him in such a manner as to imply acknowledged superiority; see Hebrews 7:1. That had the promises - The promise that he should have a numerous posterity; that in him all the…”

“He who is not from them - The Levites Blessed - Another proof of his superiority. Even him that had the promises - That was so highly favoured of God. When St. Paul speaks of Christ, he says, "the promise;" promises refer to other blessings also. Hebrews 7:7”

“7:6b-7 Melchizedek placed a blessing upon Abraham: Gen 14:19-20; this is an example of the kind of blessing that a superior would give a subordinate—e.g., a father would bless his son, and a priest would bless his people (Gen 49:1-28; Num 6:22-27). The power to give a blessing demonstrates that Melchizedek is greater than Abraham.”

“descent: Gr. pedigree, Heb 7:3 received: Heb 7:4; Gen 14:19, Gen 14:20 had: Heb 6:13-15, Heb 11:13, Heb 11:17; Gen 12:2, Gen 12:13, Gen 13:14-17, Gen 17:4-8, Gen 22:17, Gen 22:18; Act 3:25; Rom 4:13, Rom 9:4; Gal 3:16 Hebrews 7:7”