1 Thessalonians 2:10-13

10Ye are witnesses, and God also, how devoutly and justly and unblameably we behaved ourselves among you that believe: 11As ye know how we exhorted and encouraged and charged each one of you, as a father doth his children, 12That ye would walk worthy of God, who hath called you into his kingdom and glory.

13For this cause also we thank God without ceasing, because, when ye received the word of God which ye heard from us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.