Titles and Names of the Holy Spirit: Spirit of Truth
Source: TTT
John 14:17
the Spirit of truth. The world cannot receive Him, because it neither sees Him nor knows Him. But you do know Him, for He abides with you and will be in you.
John 15:26
When the Advocate comes, whom I will send to you from the Father—the Spirit of truth who proceeds from the Father—He will testify about Me.