A  ²⁷ Only let your conduct be worthy of the gospel of Christ, so that whether I come and see you or am absent, I may hear of your affairs, 

B  that you stand fast in one spirit, with one mind striving together

A’  for the faith of the gospel, 

B’  ²⁸ and not in any way terrified by your adversaries, which is to them a proof of perdition, but to you of salvation, and that from God.

A’  ²⁹ For to you it has been granted on behalf of Christ, not only to believe in Him, 

B’  but also to suffer for His sake, ³⁰ having the same conflict which you saw in me and now hear is in me.

A:  The Great Gospel: Faith and Believing In Him.
B:  The Commands: Stand Fast, Be Same-Minded, Don’t be Swayed by Adversaries, and the Reality of Suffering.