For I think that God has displayed us apostles last in line, as men doomed to die. [Note: The picture here is that of gladiators in the arena]. We are being stared at [i.e., as performers on a theater stage] for the whole world to see, both angels and people.

By reproaches

He considered suffering ridicule for Christ's sake to be greater wealth than the treasures of Egypt, because he was looking forward to his reward.

So, we should go out to Him, outside of the camp [Note: This probably signifies separating from the whole system of Judaism, as well as full commitment to Christ], bearing the abuse that He suffered.

So, I am pleased to [endure] weaknesses, insults, hardships, persecutions and difficulties, [all] for Christ's sake. For when I am weak [physically], then I am strong [spiritually].

Whilst

It is right for me to think this way about all of you, because I have you in my heart [i.e., you are dear to me], for you people are sharing in God's unearned favor with me [Note: Paul here refers to his ministry], both in my imprisonment and in my defense and confirmation of the Gospel [i.e., in my efforts to give proof of the Gospel's truth].

Nevertheless, it was really good of you people to share [with me] during my troubles [i.e., imprisonment].

For you brothers became imitators of the churches of God in Judea, which are in [fellowship with] Christ, for you people also suffered the same things from your own countrymen that they did from the Jews,

So, do not be ashamed to testify for our Lord, or ashamed of [being associated with] me, His prisoner, but [be willing to] suffer hardship with me for the sake of the Gospel, relying on God's power [to sustain you].

General references

You have not yet resisted to the point of [shedding] blood in your struggle against sin.