John Calvin on Romans 6:11

11. So count ye also yourselves, etc. Now is added a definition of that analogy to which I have referred. For having stated that Christ once died to sin and lives for ever to God, he now, applying both to us, reminds us how we now die while living, that is, when we renounce sin. But he omits not the other part, that is, how we are to live after having by faith received the grace of Christ: for though the mortifying of the flesh is only begun in us, yet the life of sin is destroyed, so that afterwards spiritual newness, which is divine, continues perpetually. For except Christ were to slay sin in us at once to the end, his grace would by no means be sure and durable.

The meaning, then, of the words may be thus expressed, “Take this view of your case, — that as Christ once died for the purpose of destroying sin, so you have once died, that in future you may cease from sin; yea, you must daily proceed with that work of mortifying, which is begun in you, till sin be wholly destroyed: as Christ is raised to an incorruptible life, so you are regenerated by the grace of God, that you may lead a life of holiness and righteousness, inasmuch as the power of the Holy Spirit, by which ye have been renewed, is eternal, and shall ever continue the same.” But I prefer to retain the words of Paul, in Christ Jesus, rather than to translate with Erasmus, through Christ Jesus; for thus the grafting, which makes us one with Christ, is better expressed.

Romans 6:12-13

12. Let not sin therefore reign in your mortal body, that ye should obey it in the lusts thereof.

12. Ne ergo regnet peccatum in mortali vestro corpore, ut illi obediatis in cupiditatibus suis:

13. Neither yield ye your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God.

13. Neque exhibeatis membra vestra arma injustitiæ peccato, sed exhibeatis vosmetipsos Deo, tanquam ex mortuis viventes, et membra vestra arma justitiæ Deo.