Time for a chainge?

This letter is from Paul, a slave of Christ Jesus, chosen by God to be an apostle and sent out to preach his Good News. (Rom 1:1, NLT)
Paul, a servant of Christ Jesus, called to be an apostle and set apart for the gospel of God — (Rom 1:1, NIV)
I have put these two translations of the same text together for a reason. It is a reason which is very important, especially to the way we think today. It is all about just one word, the Greek word doulos. I don’t want to get into an argument about which is the best translation, but there is an important point to be made here.