The Priesthood of Christ in the First Advent

Christ is functioning as a prophet and it's easier I think for us to see that in the life of Christ and his ministry whenever Jesus is because he's often declaring what is true. But but it's harder for us to actually see the priesthood of Christ in his ministry, in his earthly ministry. So how do we see Christ acting as priest in, in, it's entering his first advent? "I'm just sort of reviewing how the larger catechism actually answers this question"