1 Samuel 3:19

3:19 Samuel continued to grow, and the Lord was with him. None of his prophecies fell to the ground unfulfilled.

1 Samuel 15:29

15:29 The Preeminent One of Israel does not go back on his word or change his mind, for he is not a human being who changes his mind.”

Jeremiah 44:28-29

44:28 Some who survive in battle will return to the land of Judah from the land of Egypt. But they will be very few indeed! Then the Judean remnant who have come to live in the land of Egypt will know whose word proves true, mine or theirs.’ 44:29 Moreover the Lord says, ‘I will make something happen to prove that I will punish you in this place. I will do it so that you will know that my threats to bring disaster on you will prove true.

Zechariah 1:6

1:6 But have my words and statutes, which I commanded my servants the prophets, not outlived your fathers? Then they paid attention and confessed, ‘The Lord who rules over all has indeed done what he said he would do to us, because of our sinful ways.’”

Mark 13:31

13:31 Heaven and earth will pass away, but my words will never pass away.