John 3:32

He testifies concerning what He has seen and heard, but no one accepts His testimony.

John 3:11

Truly, truly, I tell you, we [i.e., Jesus and His disciples] speak about what we know, and testify about what we have seen, but you do not accept our testimony.

John 1:11

[Then] He came to His own [world, while on earth], but His own [people, the Israelites] did not welcome Him.

John 8:26

I have many things to say about you and [many] judgments to pass on you. However, God, who sent me, is truthful and I am telling the world [only] the things I have heard from Him."

John 15:15

I do not call you slaves anymore, for a slave does not know what his master is doing. But I have called you friends, because I have told you everything that I heard from my Father.

John 3:26

These disciples went to John and said to him, "Rabbi, look, that man who was with you on the east side of the Jordan River [i.e., Jesus], whom you testified about, is immersing people and everyone is going to him." [Note: Actually, it was Jesus' disciples who did the immersing. See 4:2].

John 3:33

The person who has accepted Jesus' testimony has confirmed this [fact], that God is truthful.

John 5:20

For the Father loves the Son, and shows Him everything that He Himself does; and He will show Him [even] greater deeds [i.e., more extensive in scope] than these [i.e., than merely healing a crippled man], so that you people will be amazed.

Romans 10:16-21

But not everyone [of the Israelites] obeyed [that] good news. For Isaiah said [Isa. 53:1], "Lord, who has believed our message?"

Romans 11:2-6

God did not reject His people whom He knew previously. Or, do you not know what the Scriptures say in the passage where Elijah pleads with God against Israel?

Treasury of Scripture Knowledge

Summary

And what he hath seen and heard, that he testifieth; and no man receiveth his testimony.

General references

Bible References

What

John 3:11
Truly, truly, I tell you, we [i.e., Jesus and His disciples] speak about what we know, and testify about what we have seen, but you do not accept our testimony.
John 5:20
For the Father loves the Son, and shows Him everything that He Himself does; and He will show Him [even] greater deeds [i.e., more extensive in scope] than these [i.e., than merely healing a crippled man], so that you people will be amazed.
John 8:26
I have many things to say about you and [many] judgments to pass on you. However, God, who sent me, is truthful and I am telling the world [only] the things I have heard from Him."
John 15:15
I do not call you slaves anymore, for a slave does not know what his master is doing. But I have called you friends, because I have told you everything that I heard from my Father.

And no

John 3:26
These disciples went to John and said to him, "Rabbi, look, that man who was with you on the east side of the Jordan River [i.e., Jesus], whom you testified about, is immersing people and everyone is going to him." [Note: Actually, it was Jesus' disciples who did the immersing. See 4:2].
John 1:11
[Then] He came to His own [world, while on earth], but His own [people, the Israelites] did not welcome Him.
Romans 10:16
But not everyone [of the Israelites] obeyed [that] good news. For Isaiah said [Isa. 53:1], "Lord, who has believed our message?"
Romans 11:2
God did not reject His people whom He knew previously. Or, do you not know what the Scriptures say in the passage where Elijah pleads with God against Israel?

General references

John 12:49
For I did not speak from myself [i.e., on my own authority], but the Father Himself, who sent me, has ordered me what to say and speak.