2 Corinthians 4:2
I have renounced the hidden things of shame, not spending my life in craftiness, nor adulterating the word of God; but setting forth the truth openly, I strive to commend myself to every man's conscience as in the sight of God.
2 Corinthians 11:3
But I fear lest, just as the serpent beguiled Eve in his craftiness, so your minds should be seduced from your single-mindedness and purity toward Christ.
2 Corinthians 11:13-15
For such fellows are sham apostles of Christ.
2 Corinthians 12:16-18
But though it be granted that I was not a burden to you, yet, you say, this was my cunning with which I caught you by a trick.
1 Thessalonians 2:3
For my preaching was not grounded on a delusion, or on impure motives, on in deceit.