The new possibility created by the priestly ministry of Jesus is that through Him we may enter into the sanctuary, the place of God’s holy presence:
Therefore, my friends, since we have confidence to enter the sanctuary by the blood of Jesus, by the new and living way that He opened for us through the curtain (that is, through His flesh), and since we have a great priest over the house of God, let us approach . . . (Hebrews 10:19-21).
Here is the climax of the writer’s argument. Through the living, dying, and ascending of Christ, we can enter the sanctuary. We can stand in the holy presence of God and offer an unending sacrifice of praise (13:15). This is the joy, the delight and the reality of Christian worship: it takes place in the presence of God through the priesthood of Christ. This is why Calvin could say that Christ is our altar on whom we lay our oblations (Institutes IV.8.17) and also, commenting on Hebrews 2:12, that “Christ leads our songs, and is the chief composer of our hymns” (1853, 67). It is also here, within the sanctuary, that our whole life is lived as a sacrificial giving to God. This is the joy, the delight, the reality of Christian living: it is life lived in the presence of God through the priesthood of Christ. To be in the presence of God is the reality of Christian worship and living, because Christ has opened up for us a “new way” (10:20) through all that would divide us from God’s presence; and this way is nothing else but Himself. Following Westcott’s construction of 10:20, we have “a way through the veil, that is, a way consisting in His flesh, His true human nature” (1903, 322).
—Christopher Cocksworth, “The Cross, Our Worship and Our Living,” in Atonement Today, 118-119