It is right for me to feel this way about you, because [you have me in your heart as] I have you in my heart, since both in my imprisonment and in the defense and confirmation of the good news [regarding salvation], all of you share in [His matchless] grace with me.

The whole imperial guard and everyone else knows that I am in prison for the sake of Christ,

But those are preaching Christ in a spirit of competition, not from their hearts, but with the purpose of giving me pain in my prison.