Hebrews 7:10

“For he was yet in the loins of his father, etc..] Abraham; namely, Levi and his whole posterity; which is to be understood seminally, just as all mankind were in the loins of Adam, when he sinned and fell, and so they sinned and fell in him; and so Levi was in Abraham's loins, when Melchisedec met him; which, as it proves Melchizedek to be greater than Levi, and much more Jesus Christ, who is a priest of his order, which is the grand thing the apostle has in view; so it serves to illustrate several points of doctrine, in which either of the public heads, Adam and Christ, are concerned, with respect to their seed and offspring; such as personal election in Christ, an eternal donation of all…”

“in the loins of his father--that is, forefather Abraham. Christ did not, in this sense, pay tithes in Abraham, for He never was in the loins of an earthly father [ALFORD]. Though, in respect to His mother, He was "of the fruit of (David's, and so of) Abraham's loins," yet, being supernaturally, without human father, conceived, as He is above the natural law of birth, so is he above the law of tithes. Only those born in the natural way, and so in sin, being under the curse, needed to pay tithe to the priest, that he might make propitiation for their sin. Not so Christ, who derived only His flesh, not also the taint of the flesh, from Abraham. BENGEL remarks, The blessings which Abraham had…”

“For he was yet in the loins of his father - Abraham is here called the father of Levi, by a common use of the word, referring to a more remote ancestor than the literal father. The meaning of the apostle is, that he was even then, in a certain sense, in the loins of Abraham, when Melchizedek met him; or it was all the same as if he were there, and had then an existence. The relation which subsisted between him and Abraham, in the circumstances of the case, implied the same thing as if he had then been born, and had acted for himself by paying tithes. Instances of this occur constantly. A father sells a farm, to which his son would he heir, and it is the same as if the son had sold it. He has…”

“Heb 7:5; Gen 35:11, Gen 46:26; Kg1 8:19 Hebrews 7:11”