My favorite verse (well, currently, this may change at any moment) in the Bible, and the reason my blog is titled 5:21, is 2 Corinthians 5:21, where Paul writes,
Jesus was identified with an alien guilt (yours!) so that you could have an alien righteousness (his!).
For our sake [God] made [Jesus] to be sin who knew no sin, so that in him we might become the righteousness of God.
Greg Beale’s elaboration on this verse in his massive A New Testament Biblical Theology is very helpful:
This affirms that Christ was identified with an alien guilt and suffered a punishment that he did not deserve. The verse says that the purpose of this is that the sinners for whom Christ bore the punishment would “become the righteousness of God in Him [Christ].” This means that they would thus be considered “not guilty” and not deserving the punishment even though they had been sinful. However, to “become the righteousness of God in Christ” apparently involves more than a “not guilty” status; it also means being identified with “the righteousness of God,” not just in the dead Christ but explicitly in the risen Christ, so that some positive aspect of Christ’s righteousness is attributed to believers. Some contend that this passage has nothing to do with Christ’s own righteousness that represents his people, since it speaks of “the righteousness of God.” But this is “the righteousness of God in Christ.” Thus, Christ himself reflects God’s righteousness, and that righteousness is attributed to believers “in Christ.” (p. 472)
It’s one thing to be forgiven of your sin, it’s something more to also be totally righteous. The good news (gospel!) is that by trusting Jesus you can be both–completely forgiven of your sins and considered just as righteous as Jesus is. For those who believe this gospel, Jesus was identified with an alien guilt (yours!) so that you could have an alien righteousness (his!).
The goal of your day today and everyday is to excessively believe this