1 Thessalonians 2:5-6, 11

For neither at any time were we found using words of flattery, as ye know, nor a cloak of covetousness, God is witness; nor seeking glory of men, neither from you nor from others, when we might have claimed authority as apostles of Christ.

as ye know how we dealt with each one of you, as a father with his own children, exhorting you, and encouraging you, and testifying