Hebrews
Hebrews 1:1-14
Hebrews 7:3
"Without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God, he remains a priest perpetually" (Hebrews 7:3 NASB1995).
Here, Melchizedek (Hebrews 7:1) is said to be without genealogy, "i.e. of whom neither father, nor mother, nor pedigree stands recorded in Holy Scripture. This is the usual interpretation of the words, which has been the prevalent one in the church from early times to the present" (Meyer, c.f. Barnes).
“[H]aving neither beginning of days nor end of life,” i.e., again, as he is represented in Scripture. No mention is made of his birth or death, of his inauguration to his office or of his retirement from it. The idea is conveyed that so long as priestly services of that particular type were needed, this man performed them" (Expositor's Greek Testament).
Hebrews 11:4
"By faith Abel offered to God a better sacrifice than Cain, through which he obtained the testimony that he was righteous, God testifying about his gifts, and through faith, though he is dead, he still speaks," (Hebrews 11:4 NASB1995).
The beginning to the midsection of the verse has an evident interpretation, referring to what had been said in Genesis. What becomes interesting is near the end: "though he is dead, he still speaks".
The meaning is that this story's wisdom still speaks today: "The story of Abel's faith, as recorded in the Bible, still speaks to generation after generation. This mention of Abel's faith indicates that, from the very outset of human history, some OT figures were saved by means of faith," (Crossway 2380). (C.f. Cambridge).