Bible Verses About Ministers: should Preach without Deceitfulness

For we are not as many, which corrupt the word of God: but as of sincerity, but as of God, in the sight of God speak we in Christ.

But have renounced the hidden things of dishonesty, not walking in craftiness, nor handling the word of God deceitfully; but by manifestation of the truth commending ourselves to every man's conscience in the sight of God.

For our exhortation was not of deceit, nor of uncleanness, nor in guile:

For neither at any time used we flattering words, as ye know, nor a cloke of covetousness; God is witness: