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.
Now, if I say I believe in Jesus Christ as my Lord and my Savior, then that very belief is going to bring about a certain style and manner of living. If I really believe it. Now, I can say I believe something that I don't really believe. And I may fool people into thinking that I believe something that I don't really believe, but I don't fool God. For true belief in Jesus Christ is going to be manifested my behavior. I cannot walk in darkness and possess the light.