He that believes in the Son of God has the testimony in himself; he that does not believe God has made Him a liar, because he has not believed in the testimony which God has testified concerning His Son.

And what He has seen and heard, that He testifies; and no one receives His testimony.

He who receives His testimony has certified that God is true.

"If I testify of Myself, My testimony is not valid.

You have sent to John, and he has testified to the truth.

He was the burning and shining lamp, and you were willing to rejoice for a while in his light.

It is also written in your law that the testimony of two men is valid.

Then they said to Him, "Where is Your Father?" Jesus answered, "You know neither Me nor My Father. If you knew Me, you would also know My Father."

but if I am doing [them], even if you do not believe Me, believe the works, so that you may know and believe that the Father is in Me, and I in Him."

And we are His witnesses of these words, and so also is the Holy Spirit whom God has given to those who obey Him."

because He has appointed a day in which He is going to judge the world in righteousness by a Man whom He appointed, having given proof to all, by raising Him from the dead."

God also bearing witness both with signs and wonders, with various miracles, and gifts of the Holy Spirit, according to His own will?

in order that through two unchangeable things, in which it is impossible for God to lie, we might have strong encouragement, who have fled to take hold of the hope being set before [us];

And having been baptized, Jesus came up immediately from the water; and behold, the heavens were opened to Him, and He saw the Spirit of God descending like a dove and coming upon Him.

And behold, a voice came out of the heavens, saying, "This is My beloved Son, in whom I have found delight."

While he was still speaking, behold, a bright cloud overshadowed them; and behold, a voice [came] out of the cloud, saying, "This is My beloved Son, in whom I am well pleased. Hear Him!"