Our visit to you was not a failure. 1 Thessalonians 2:1, though some appeal to you from:
* Error
* Impure motives  (like, greed, pride, to please listeners, to receive praise)
* To trick you 1 Thessalonians 2:3

We received insults in Philippi. In spite of strong opposition, we dared to tell you the good news of Jesus Chris. Thessalonians 2:2

We never use flattery. We speak as men approved by God to be trusted with his good news. We are trying to please God. God tests our hearts on this. 1 Thessalonians 2:5-6