1 Thessalonians 2:4-6

but just as we have been approved by God to be entrusted with the gospel, so we speak, not as pleasing men, but God who examines our hearts. For we never came with flattering speech, as you know, nor with a pretext for greed—God is witness— nor did we seek glory from men, either from you or from others, even though as apostles of Christ we might have asserted our authority.