Once when Swiss theologian Karl Barth was asked what he thought was the most important word in the New Testament, he asnwered, "Huper." Huper is a preposition meaning "on behalf of" or "in place of." So when Barth called huper the most important word, he meant that the most important of all truths is that in salvation Jesus takes our place to bear the punishment for our sins so that "in him we might become the righteousness of God" (2 Cor. 5:21). - James Montgomery Boice, Whatever Happened to the Gospel of Grace?, p. 102

"It is impossible to overestimate the importance of Christ's Cross. For whether we are thinking about the necessity of the Cross, the meaning of the Cross, the preaching of the Cross, the offense of the Cross, or the way of the Cross - however we may think about it - in every case what we are saying, and must be saying, is that the Cross is central to Christianity. Indeed, we are saying more. We are saying that without the Cross of Jesus Christ there is no true Christianity at all." - James Montgomery Boice, Whatever Happened to the Gospel...