As regards Rom. 6:2,2God forbid. How shall we, that are dead to sin, live any longer therein? (Romans 6:2) the wished-for translation is the result of a misconception of the whole passage. It makes it a motive drawn from a previous evil result and no more; whereas it is perfectly certain that the passage contemplates our dying in becoming Christians, not by our sins. Those who have been baptized unto Christ have been baptized unto Hit death. We have been made one plant with Him in the likeness of His death; and this is in order that we might walk in newness of life. Hence it is perfectly certain that the doctrine of the chapter is dying out of our old man, and living in newness of life—not our dying by our sin so as to be afraid of living in it now. And such is the whole tenor of the chapter; "our old man has been crucified with him;" and the use too of the dative at the close. How the writer can take νόμῳ in Gal. 2:19,19For I through the law am dead to the law, that I might live unto God. (Galatians 2:19) as "by the law," is hard to conceive; because it is preceded by διὰ νόμου, meaning "by the law," which makes it simply impossible. 2 Corinthians 13:4,4For though he was crucified through weakness, yet he liveth by the power of God. For we also are weak in him, but we shall live with him by the power of God toward you. (2 Corinthians 13:4) is ἐκ δυνάμεως. I suppose he only quotes this for the sense.
Living in sin, and being dead in it, is not the same thing. One is the continuity of the old man in sin, the other is his state in respect of God; but both are true: "alienated from the life of God." A reference to Colossians shows, in the analogous passage, νεκροὺς ὄντας ἐν τοῖς παραπτώμασι καὶ τῆ ἀκροβυστία. Now ἐν can be used as an instrument or power too. But I think no intelligent Christian could doubt what it means here; and I do not see how it is possible with ἀκροβυστία to take it in any other sense than "in." Besides, νεκρούς would not be the word. It signifies properly "a corpse." It is not dying as a punishment for them, but a state in which they were. Then God creates again. They are viewed not as dying by or for their sins. It is not ἀπεθάνετε, but being νεκρούς He has quickened. The first work in the corpse is quickening with Christ, God's act. In Romans and Colossians, being alive in sin, ye have died (ἀπεθάνετε) in Christ. In Ephesians, being νεκροί, we have been quickened with Him: it is a new creation. It does not seem to me there can be the smallest doubt of what is the right translation.
As to 1 Cor. 15:3,3For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures; (1 Corinthians 15:3) again, I know of no objection, if used in a general way of saying, Christ died for any man's sins. In the passage, however, Paul is addressing believers as such, but still speaks vaguely, so that "he that hath ears to hear" may apply it. "He is a propitiation for the whole world." But this is never said of bearing sins. That is carefully avoided in scripture. It will not be found other than dying for our sins. But 'bearing sins' in all parts of scripture is thus specifically confined. So we read, "We pray in Christ's stead, be ye reconciled... for he hath made him to be sin for us." Scripture is accurate here—a propitiation set out before all, and sure remission of all, if we come; but bearing sins never extended to those who are lost, or His doing it might be in vain for believers. "Our," to saints or sinners, is the scriptural way of putting it.