Ephesians 2:13-14 (KJV) (13) But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ. (14) For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;
Jesus Christ is the basis of our salvation. There was a time when we were far from the Lord, but through His blood that changed. Just think about it, the death of Jesus Christ on the cross changed the relationship of God with mankind. Through His sacrificial atoning death, Jesus reconciled an entire world to Himself. Because of what He did, we have total peace with God. We are no longer two races (Jew and Gentile), but one race. There is no longer a wall between us. If we are all saved, then we are all Christians.
(Read John 10:16)