Acts 20:20
and that I have suppressed nothing which could conduce to your profiting; not desisting from preaching to you, and teaching you in public, and from house to house,
Acts 20:27
For I have concealed nothing, so as not repeatedly to declare to you the whole counsel of God.
Romans 9:1-3
I SPEAK the truth in Christ, I lie not, (my conscience also bearing witness to me in the Holy Ghost,)
2 Corinthians 1:12
For our glorying is this, the testimony of our conscience, that in simplicity and godly sincerity, not with carnal wisdom, but by the grace of God, we have conducted ourselves in the world, and peculiarly towards you.
2 Corinthians 2:17
For we are not as the many, adulterating the word of God; but as of sincerity, but as of God, in the sight of God, speak we in Christ.
James 3:1
MY brethren, be not many teachers, knowing that we shall receive a severer judgment.