John 8:14

Jesus answered, "Even if I am testifying to myself, my testimony is true, for I know where I have come from and where I am going; but you do not know where I come from or where I am going.

John 8:45-46

But because I tell the truth you will not believe me.

John 14:6

Jesus said to him, "I am Way and Truth and Life. No one can come to the Father except through me.

John 17:17

Consecrate them by truth. Your message is truth.

John 18:37

Pilate said to him, "Then you are a king?" Jesus answered, "As you say, I am a king. It was for this that I was born and for this that I came to the world, to give testimony for truth. Everyone who is on the side of truth listens to my voice."

Revelation 3:14

"To the angel of the church in Laodicea write: " 'The Amen, the true and faithful witness, the origin of God's creation, speaks thus:

Treasury of Scripture Knowledge

Summary

For my mouth shall speak truth; and wickedness is an abomination to my lips.

Bible References

My mouth

John 8:14
Jesus answered, "Even if I am testifying to myself, my testimony is true, for I know where I have come from and where I am going; but you do not know where I come from or where I am going.
John 14:6
Jesus said to him, "I am Way and Truth and Life. No one can come to the Father except through me.
John 17:17
Consecrate them by truth. Your message is truth.
John 18:37
Pilate said to him, "Then you are a king?" Jesus answered, "As you say, I am a king. It was for this that I was born and for this that I came to the world, to give testimony for truth. Everyone who is on the side of truth listens to my voice."
Revelation 3:14
"To the angel of the church in Laodicea write: " 'The Amen, the true and faithful witness, the origin of God's creation, speaks thus: