Bible Verses About Sincerity: should Characterise: The Preaching of the Gospel

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.

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

But as we were allowed of God to be put in trust with the gospel, even so we speak; not as pleasing men, but God, which trieth our hearts.

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