John 8:14 Jesus answered and said to them, "Even if I bear witness of Myself, My witness is true, for I know where I came from and where I am going; but you do not know where I come from and where I am going.
John 8:18 I am One who bears witness of Myself, and the Father who sent Me bears witness of Me."
John 8:31-32 Then Jesus said to those Jews who believed Him, "If you abide in My word, you are My disciples indeed. And you shall know the truth, and the truth shall make you free."
John 8:45-47 But because I tell the truth, you do not believe Me. Which of you convicts Me of sin? And if I tell the truth, why do you not believe Me? He who is of God hears God's words; therefore you do not hear, because you are not of God."
John 16:13 However, when He, the Spirit of truth, has come, He will guide you into all truth; for He will not speak on His own authority, but whatever He hears He will speak; and He will tell you things to come.
John 18:37 Pilate therefore said to Him, 'Are You a king then?' Jesus answered, 'You say rightly that I am a king. For this cause I was born, and for this cause I have come into the world, that I should bear witness to the truth. Everyone who is of the truth hears My voice.'
John 19:35 And he who has seen has testified, and his testimony is true; and he knows that he is telling the truth, so that you may believe.