"Know ye not that so many of us as were baptized into Jesus Christ were baptized into his death? Therefore we are buried with him by baptism into death: that like as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life. For if we have been planted together in the likeness of his death, we shall be also in the likeness of his resurrection."  Romans 6:3-5 

"We, who are by nature Gentiles, cannot do better than accept this very complete explanation of the true baptism addressed by the Apostle Paul to the believers at Rome-- many, if not all, of whom had been Gentiles, ’children of wrath.’ In three verses here the Apostle deals most thoroughly with the subject of baptism as it applies to us. These verses are very generally used to prove all the various doctrines of baptism, but quoted especially by our brethren who recognize baptism as signifying immersion in water. Let it be clearly noticed, however, that the Apostle makes not one word of reference to water baptism. Water baptism is merely a symbol, or picture of the real baptism; and the Apostle, in these verses explains, from various standpoints, the true, the essential baptism, without which no one can be considered a member of the body, or Church of Christ, while all who receive this baptism, of whatever name or place, color or sex, are to be counted as members of the Ecclesia, members of the New Creation."  The New Creation, pp. 434-435

Read the online excerpt (Chapter 10) from The New Creation: "The Baptism of the New Creation"