John 7:17
If anyone is willing to do his will, he shall know whether the teaching is from God or whether I speak on my own authority.
John 17:8
For I have given them the words which you have given me, and they have received them and know in truth that I came from you; and they have believed that you sent me.
Acts 20:27
For I did not shrink from declaring to you the whole counsel of God.
1 Corinthians 4:4
I am not aware of anything against myself, but I am not acquitted by this. It is the Lord who judges me.
1 Corinthians 11:23
For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread,
Hebrews 3:5-6
Now Moses was faithful in all God's house as a servant, to testify to the things that were to be spoken later,