Romans 6. 5-10

[5] For if we have been united with him in the likeness of his death, then we will also be of the resurrection. [6] Knowing this, that our old man was crucified with him, in order that the body of sin might be nullified, in order that we might no longer serve sin. [7] For the one who dies is justified from sin. [8] And if we died with Christ, we believe that we will also live with him. [9] Knowing that Christ being raised from the dead, will never die again, death no longer rules him. [10] For what he died, he died to sin once for all. And what he lives, he lives to God.

In v. 5 Paul continues the effects of the individual's inclusion into Jesus by way of baptism. If we have been united into the likeness of Jesus' death by way of conversion (i.e., baptism), then it follows that we will also be united into Jesus resurrection. The mention of resurrection here seems not to only be about the resurrection on the last day, but to include the present effects of the resurrection on those who are included into Jesus' death. That is, the believer in Jesus already is resurrected, and will be resurrected. Paul continues to elaborate in v. 6 regarding the significance of these things on the one included into Jesus. The old man (Adam) of those who are baptized into Christ has been crucified. Calling to mind 5.12-21, the effects of Adam's disobedience on those who belong to him are crucified, because of the work of Christ. Because of his work and our inclusion into his work, those who belong to Jesus no longer belong to Adam, or sin, and we no longer live under the overlord, Sin. In v. 7 Paul seems to be speaking of the individual Christian here in talking about that in death, that is the inclusion into Jesus' death, the Christian is justified (freed) from sin. I know this could go a few ways, but it seems that the emphasis is on what is true of the one in Christ, because of his inclusion into Jesus' death.

In v. 8 Paul goes on to speak a bit more regarding the life-giving effects of Jesus' death and resurrection. Those who have died with Christ will also life with him. Again, here the point seems to be not only the future resurrection, but that the future resurrection is coming to work out in the present. The new creation began with Jesus' resurrection, and because of this, all who belong to Jesus are already raised, and thus will be raised in the last day. The emphasis is on the future, but the language (especially where Paul goes in the following verses) seems to include the present. As Jesus will no longer die, because the death he died he died once for all time, so it is with those who are included in him. Those included in him are no longer under the rule or lordship of death. Paul, then grounds this statement in Jesus' death and resurrection. Jesus' death was a death to sin, that is he lived under the rule of sin, though he did not sin. He entered into the human condition, and died, taking on the penalty for sin. In doing so he was raised to life, and life he lives under the rule of God, which is grace and righteousness.