Christ is now the high priest over all the good things of the new covenant. God appointed him, as mentioned in Psalm 110:4 (Hebrews 5:1–10; 7:1–28), and he offered a better sacrifice.
that have come: Some manuscripts say that are about to come, either from the old covenant's viewpoint or looking forward to God's future plan.
Christ’s sacrifice is better because it was made in the greater, perfect tabernacle in heaven, not the earthly one (see 8:5 and corresponding study note).