Paul starts the greeting with his name Paul which is customary for his letters. He then continues with the phrase “a bond-servant of Christ Jesus”.
The first thing Paul wants them to understand about himself is he is a bond-servant.
Most english translations translate the word here doulos as either servant or bond-servant.
The word actually means bond slave so Paul is calling himself a slave of Christ Jesus.
This is a very interesting way for a man to describe himself. Can you imagine walking up to to a total stranger and saying “Hi I’m Keith Powers and I’m a bond slave of Christ Jesus.”?
So why is Paul calling himself a slave right from the start?