Numbers 35

The man who renounces the vices and rejects the way of life of his countrymen is in flight like Lot. Such a one does not look behind himself but enters that city which is above by the passageway of his thoughts, and he does not withdraw from it until the death of the chief priest who bore the sin of the world. He indeed died once, but he dies for each person who is baptized in Christ's death, that we may be buried together with him and rise with him and walk in the newness of his life.

What does it mean that a homicide returns for absolution after the death of the high priest, except that the human race, which brought death upon itself by sinning, receives absolution for its guilt after the death of the true priest, namely, our Redeemer? Exposition of the Old and New Testament, Numbers

What does it mean that a homicide returns for absolution after the death of the high priest, except that the human race, which brought death upon itself by sinning, receives absolution for its guilt after the death of the true priest, namely, our Redeemer?