2 Corinthians 5:17 (NKJV)
When you meet someone for the first time, you usually want to know who they are. Some people will tell you about themselves and where they come from, while other people will talk about their job and the work that they do. Both responses are good and will help you get to know someone, but there can be a problem if someone is so wrapped up in the work that they do that it is the primary way that they identify themselves. Who you are is just as significant as what you do.
The Bible tells us in 2 Corinthians 5:17 that when we are born again, we become a new creation in Christ. The Bible also tells us that we are a part of the Body of Christ (1 Corinthians 12:27) and that we are children of God (1 John 3:1-2). As a new creation in Christ, because we are a part of the Body of Christ, and as the children of God, there are things we will do for, and with God, but the most important part of our life is our relationship with God, not the things that we do for God.
There are many Christians who base their identity on what they do for God, rather than on their relationship with God as a member of His family. While we are God's workmanship and we are created to do good works (Ephesians 2:10), the fact of being the workmanship of God itself is more important for us than the work we are called to do is. It is not what we do for God that identifies us or gives us value, it is who we are in our relationship with God that matters. We all need to realize that who we are in Christ is more important that what we do for God.