I along with Randy and Bill would like to see a discussion of 1Cor 12:13-18
and Romans 6:1-6. The reality spoken of is Spirit Baptism,as actual and true of those the text is speaking of. This is an area that is often not discussed in depth.
It is not speaking of a "promise" but of actual regenerate persons. Some commentaries try to explain it away,but you can tell when you read them they are missing the key part of the verses that speak about the power of sin actually being broken, that they have obeyed from the heart that form of doctrine. Not if they someday obey it.