For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection. (Romans 6:5)

Christianity is not a religion ABOUT Christ. Neither is salvation merely a new legal classification. Christianity is, “Christ in us.” (Col. 1:27) Thus, salvation is also Christ in us – we are joined to the Lord and one spirit with Him (I Cor. 6:17) – we are joined to the One who said, “I am the resurrection and the life.” (John 11:25) The reason we have eternal life is because we are one with Life Himself.

In Romans 6:5 we see that the believer is, “planted,” or, “ingrafted,” into Christ. Thus, His death means death to our old man. His life becomes our life. This is not theory. It is the Truth. It is what it means to be a Christian – it is the only kind of Christianity there is.
God became man in order that man could become one with God. Jesus Christ died and was raised for us so that we could die and be raised in Him. That spells freedom from the old creation – from the power of it in this age – and new life in His life.