«He (Christ) is the propitiation [atoning sacrifice] for our sins, and not for ours only but also for the sins of the whole world.» (redeeminggod.com)
It is believed that the fragmentary insights of both Old and New Testament writers are fulfilled in God's dramatic incursion into human history which we see in the incarnation and atoning sacrifice of Jesus Christ, in his life, death, and resurrection. (religion-online.org)
Don't you see that God was painting a picture of something... important... when he instructed the Jews to have atoning sacrifices for sin? (redeeminggod.com)