And he is the atoning sacrifice{"atoning sacrifice" is from the Greek "hilasmos," an appeasing, propitiating, or the means of appeasement or propitiation-- the sacrifice that turns away God's wrath because of our sin.} for our sins, and not for ours only, but also for the whole world.

 The first question is easy to answer. There was only one ceremony that all Christians passed through, and that was baptism; it was, indeed, in later days the standard practice at baptism to anoint Christians with holy oil, as Tertullian tells us. 