2 Corinthians 1:12
Paul Defends His Changed Plans
1:12 For our reason for confidence is this: the testimony of our conscience, that with pure motives and sincerity which are from God – not by human wisdom but by the grace of God – we conducted ourselves in the world, and all the more toward you.
Romans 12:8
12:8 if it is exhortation, he must exhort; if it is contributing, he must do so with sincerity; if it is leadership, he must do so with diligence; if it is showing mercy, he must do so with cheerfulness.