Acts 20:20
and that I never shrank from declaring to you anything that was profitable, or from teaching you in public and in your homes,
Acts 20:27
For I have not shrunk from declaring to you God's whole truth.
Romans 9:1-3
I am telling you the truth as a Christian man--it is no falsehood, for my conscience enlightened, as it is, by the Holy Spirit adds its testimony to mine--
2 Corinthians 1:12
For the reason for our boasting is this--the testimony of our own conscience that it was in holiness and with pure motives before God, and in reliance not on worldly wisdom but on the gracious help of God, that we have conducted ourselves in the world, and above all in our relations with you.
2 Corinthians 2:17
We are; for, unlike most teachers, we are not fraudulent hucksters of God's Message; but with transparent motives, as commissioned by God, in God's presence and in communion with Christ, so we speak.
James 1:19
You know this, my dearly-loved brethren. But let every one be quick to hear, slow to speak, and slow to be angry.
James 3:1
Do not be eager, my brethren, for many among you to become teachers; for you know that we teachers shall undergo severer judgement.