1 Cor 4:11-13, 2 Cor 6:9-10, 2 Cor 12:7-9, 2 Tim 4:17
Paul faced many difficulties while preaching the gospel. But Paul made it clear that in Christ, no difficulties can stop the preaching of the gospel.
Phil 4:11 Not that I speak in respect of want: for I have learned, in whatsoever state I am, therewith to be content. 12 I know both how to be abased, and I know how to abound: every where and in all things I am instructed both to be full and to be hungry, both to abound and to suffer need. 13 I can do all things through Christ which strengtheneth me.
1 Cor 4:11 Even unto this present hour we both hunger, and thirst, and are naked, and are buffeted, and have no certain dwellingplace; 12 And labour, working with our own hands: being reviled, we bless; being persecuted, we suffer it: 13 Being defamed, we intreat: we are made as the filth of the world, and are the offscouring of all things unto this day.
2 Cor 6:9 As unknown, and yet well known; as dying, and, behold, we live; as chastened, and not killed; 10 As sorrowful, yet alway rejoicing; as poor, yet making many rich; as having nothing, and yet possessing all things.
2 Cor 12:7 And lest I should be exalted above measure through the abundance of the revelations, there was given to me a thorn in the flesh, the messenger of Satan to buffet me, lest I should be exalted above measure. 8 For this thing I besought the Lord thrice, that it might depart from me. 9 And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me.
2 Tim 4:17 Notwithstanding the Lord stood with me, and strengthened me; that by me the preaching might be fully known, and that all the Gentiles might hear: and I was delivered out of the mouth of the lion.