Having Christ's righteousness is the most important possession a person can own. It makes all of the difference between eternal life or eternal death.
JC Ryle has preached a marvelous sermon on this text. It asks a question and then answers it with three points. The question Ryle asks is the most important question any person can ever ask. Here it is:
The great question to be made known is, "How shall man be just with God? How can I come before the Lord in innocence?"... You must understand:
1. That you must have a perfect righteousness-or you will not be saved.
2. That you have no righteousness of your own of any sort, and therefore by yourself you cannot be saved.
3. That the Lord Himself must be your righteousness, and so you shall be saved.
Read "The Lord Our Righteousness"