Hebrews 8:4
However, if He were still on earth, He would not be a priest at all, because there are those who officiate in accordance with the law in offering the gifts;
Hebrews 5:1
For every high priest who is taken from men is appointed to officiate on behalf of men in matters relating to God, that is, to offer gifts and sin-offerings.
Hebrews 7:11-15
Now if perfection had been reached through the Levitical priesthood -- for on it as a basis even the law was enacted for the people-- what further need would there have been of appointing a different priest, with the rank of Melchizedek, instead of designating one with the rank of Aaron?
Hebrews 11:4
By faith Abel offered a sacrifice more acceptable to God than Cain did, for by it he was approved as an upright man, since God approved him for the offering he made; and by it he still continues to speak, though dead.