Set your mind on things above, not on things on the earth.
For you died, and your life is hidden with Christ in God."
Colossians 3:1-3 (NKJV)
If you are flying to some international destination, and even for some domestic flights, you will need a passport. You may have your driver's license with you, a credit card, or even your social security card, but without a valid passport in your possession you would have problems. The reason is that if you are taking an international flight a passport is the only valid form of identification that is accepted. A driver's license, a credit card, and a social security card are other ways you can identify yourself, but they are not a valid form of identification for international travel.
In Colossians 3, we are told that our life is hidden in Christ. This means that for us to know who we really are, to know our true identity, we have to learn about who we are in Christ. Just like you cannot make an international trip without a valid form of identification, a passport, we cannot make a successful journey through life without our valid form of spiritual identification, who we are in Christ. If we try to live a life based on something other than our identity as a believer in Jesus we will not have the kind of life that we want and that God has planned for us.
There are many, many things that people use to identify themselves and that they base their life on. But, unless these things relate to who we are in Christ they are not valid forms of identification. This may mean that we have to stop using the way of identifying ourselves that we have in the past. Just like some natural form of identification that has expired, the way we identified ourselves in the past, especially before we were Christians, our former natural means of identification is no longer valid. As Christians our only valid form of identification is what we find in the Bible about who we are in Christ.