John 1:51

1:51 He continued, “I tell all of you the solemn truth – you will see heaven opened and the angels of God ascending and descending on the Son of Man.”

John 3:3

3:3 Jesus replied, “I tell you the solemn truth, unless a person is born from above, he cannot see the kingdom of God.”

John 3:5

3:5 Jesus answered, “I tell you the solemn truth, unless a person is born of water and spirit, he cannot enter the kingdom of God.

John 3:11

3:11 I tell you the solemn truth, we speak about what we know and testify about what we have seen, but you people do not accept our testimony.

John 3:21

3:21 But the one who practices the truth comes to the light, so that it may be plainly evident that his deeds have been done in God.

John 8:40

8:40 But now you are trying to kill me, a man who has told you the truth I heard from God. Abraham did not do this!

John 8:46

8:46 Who among you can prove me guilty of any sin? If I am telling you the truth, why don’t you believe me?

John 13:20-21

13:20 I tell you the solemn truth, whoever accepts the one I send accepts me, and whoever accepts me accepts the one who sent me.”

13:21 When he had said these things, Jesus was greatly distressed in spirit, and testified, “I tell you the solemn truth, one of you will betray me.”

John 13:38

13:38 Jesus answered, “Will you lay down your life for me? I tell you the solemn truth, the rooster will not crow until you have denied me three times!

John 14:6

14:6 Jesus replied, “I am the way, and the truth, and the life. No one comes to the Father except through me.

John 15:26

15:26 When the Advocate comes, whom I will send you from the Father – the Spirit of truth who goes out from the Father – he will testify about me,

John 16:20

16:20 I tell you the solemn truth, you will weep and wail, but the world will rejoice; you will be sad, but your sadness will turn into joy.

John 16:23

16:23 At that time you will ask me nothing. I tell you the solemn truth, whatever you ask the Father in my name he will give you.

John 19:35

19:35 And the person who saw it has testified (and his testimony is true, and he knows that he is telling the truth), so that you also may believe.