I just read the letter to the church as Ephesus again.
...For he himself is our peace...
Christ is our peace, if we look anywhere else, we won't find it.
...He came and preached peace to you who were far away and peace to those who were near....
Christ is our peace and He came to preach peace and He sends us to preach peace. Not peace with the world, but peace with the Father, because it is only through the Son that we can reach the Father.
...I became a servant of this gospel by the gift of God's grace given me through the working of his power.
Paul was a servant of the gospel...yes, and a slave to Christ. For him, his position of servant and slave was a position of strength, not weakness.
When Paul wrote this letter, he was in prison for preaching the gospel, and he kept right on preaching. He was no wimp. He was a strong leader and he was a devoted servant.
I know what it is to be in need, and I know what it is to have plenty. I have learned the secret of being content in any and every situation, whether well fed or hungry, whether living in plenty or in want. I can do everything through him who gives me strength. (Phil 4:12,13)