You misunderstand the full breadth and width of the priestly role, which Hebrews explains. The sacrifice was once for all time, his role as mediator before God in light of that sacrifice is eternal. Once again, Hebrews addresses this. Crack it open.
Hodos:
No, an apostolic one. My doctrine matches what the author of Hebrews proclaimed.
Heb 10 is talking about deliberately missing Mass (The Eucharist) on Sunday
Heb 10: (all emphasis mine)
19 Therefore, brethren, since we have confidence to enter the sanctuary by the blood of Jesus, 20 by the new and living way which he opened for us through the curtain, that is, through his flesh, 21 and since we have a great priest over the house of God, 22 let us draw near with a true heart in full assurance of faith, with our hearts sprinkled clean from an evil conscience and our bodies washed with pure water. 23 Let us hold fast the confession of our hope without wavering, for he who promised is faithful; 24 and let us consider how to stir up one another to love and good works, 25 not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near. 26 For if we sin deliberately after receiving the knowledge of the truth, there
no longer remains a sacrifice for sins, 27 but a fearful prospect of judgment,and a fury of fire which will consume the adversaries. 28 A man who has violated the law of Moses dies without mercy at the testimony of two or three witnesses. 29 How much worse punishment do you think will be deserved by the man who has
spurned the Son of God and profaned the
blood of the covenant by which he was sanctified, and outraged the Spirit of grace?30 For we know him who said, “Vengeance is mine, I will repay.” And again, “The Lord will judge his people.” 31 It is a fearful thing to fall into the hands of the living God."
Unpacking that
deliberate Failure to meet on the Day,
is already a huge sin
“the Day” = the LORD’S DAY / Sunday/ the Day Our Lord Resurrected
when they meet?
They are offering the “sacrifice for sin”, & and; “blood of the covenant” = the words Our Lord spoke instituting the
Eucharist
Matthew 26:28 ,
https://www.biblegateway.com/passage/?search=Mt+26:28&version=RSVCE
Mark 14:24 ,
https://www.biblegateway.com/passage/?search=Mark+14:24&version=RSVCE
They are celebrating the Mass, the Eucharist
those who deliberately fail to celebrate the Eucharist on Sunday after being given the knowledge of truth,
◦ no longer remains, a sacrifice for sin and blood of the covenant for
THEM
◦ They Spurn the Son of God
◦ They outrage the spirit of grace
◦ a fearful prospect of judgement awaits Them
◦ and a fury of fire will consume these adversaries
Re: that sin
Based on the consequences,
Mass on Sunday is a command
to deliberately miss Mass on Sunday is a mortal sin