1 Thessalonians 2:5-6

2:5 For we never appeared with flattering speech, as you know, nor with a pretext for greed – God is our witness – 2:6 nor to seek glory from people, either from you or from others,

1 Thessalonians 2:9

2:9 For you recall, brothers and sisters, our toil and drudgery: By working night and day so as not to impose a burden on any of you, we preached to you the gospel of God.