1 Thessalonians 1:5

1:5 in that our gospel did not come to you merely in words, but in power and in the Holy Spirit and with deep conviction (surely you recall the character we displayed when we came among you to help you).

1 Thessalonians 2:2

2:2 But although we suffered earlier and were mistreated in Philippi, as you know, we had the courage in our God to declare to you the gospel of God in spite of much opposition.