Acts 20:20
[You know] how I held back nothing in declaring to you whatever was profitable, and taught you in public [meetings] and in your homes.
Acts 20:27
For I held nothing back in declaring to you the entire message of God.
Romans 9:1-3
I am telling [you] the truth in Christ [i.e., since I am a Christian]; I am not lying. My conscience, [confirmed] by the Holy Spirit, supports my statements [as true],
2 Corinthians 1:12
For this is what we boast of: Our conscience testifies that we have conducted ourselves in the world, and especially toward you, in holiness and godly sincerity, not with human wisdom, but with the favor of God.
2 Corinthians 2:17
For we [apostles] are not like so many people, who "peddle" God's message merely for profit [or, "who corrupt God's message"], but in Christ's [service] we proclaim the message from God with sincerity, [realizing we are] in the presence of God.
James 1:19
You people [already] know this [or, "you should know this"], my dearly loved brothers. However, every person should be quick to listen, slow to talk and slow in becoming angry.
James 3:1
Not many of you should be teachers, my brothers, because you [should] know that we [teachers] will be judged more strictly.