Both of those two beautiful verses are completely compatible with the Catholic ministerial priesthood. If you do not think so, you are in error.
Peace be with you.
Once a person is saved, their sins are forgiven and there is no need for a priesthood.
Hebrews 10:12-18 But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, 13 waiting from that time until his enemies should be made a footstool for his feet. 14 For by a single offering he has perfected for all time those who are being sanctified.
15 And the Holy Spirit also bears witness to us; for after saying,
16 This is the covenant that I will make with them after those days, declares the Lord: I will put my laws on their hearts, and write them on their minds,
17 then he adds,
I will remember their sins and their lawless deeds no more.
18 Where there is forgiveness of these, there is no longer any offering for sin.