Why is Christ the only answer to our problem of sin?

"Of all the great founders of  religions, Christ is the only one who will come alongside us, claiming to be our Creator incarnate, come to deal with the problem of guilt of our sin by means of His sacrifice on the cross so that we can receive forgiveness and peace with God. To ask why we must think that Christ is the only way to God is to miss the point completely. For Christ does not, in that sense, compete with anyone for the simple reason that no one else claims to deal with this fundamental problem. He is the only one in the running. How can it be narrow-minded or arrogant to accept from Christ when no one else offers?”
- Dr. David Gooding