Matthew 6:30

6:30 And if this is how God clothes the wild grass, which is here today and tomorrow is tossed into the fire to heat the oven, won’t he clothe you even more, you people of little faith?

Matthew 8:26

8:26 But he said to them, “Why are you cowardly, you people of little faith?” Then he got up and rebuked the winds and the sea, and it was dead calm.

Matthew 13:58

13:58 And he did not do many miracles there because of their unbelief.

Matthew 16:8

16:8 When Jesus learned of this, he said, “You who have such little faith! Why are you arguing among yourselves about having no bread?

Mark 9:19

9:19 He answered them, “You unbelieving generation! How much longer must I be with you? How much longer must I endure you? Bring him to me.”

Mark 16:14

16:14 Then he appeared to the eleven themselves, while they were eating, and he rebuked them for their unbelief and hardness of heart, because they did not believe those who had seen him resurrected.

Luke 9:41

9:41 Jesus answered, “You unbelieving and perverse generation! How much longer must I be with you and endure you? Bring your son here.”

Luke 24:25

24:25 So he said to them, “You foolish people – how slow of heart to believe all that the prophets have spoken!

John 20:27

20:27 Then he said to Thomas, “Put your finger here, and examine my hands. Extend your hand and put it into my side. Do not continue in your unbelief, but believe.”

Hebrews 3:16-19

3:16 For which ones heard and rebelled? Was it not all who came out of Egypt under Moses’ leadership? 3:17 And against whom was God provoked for forty years? Was it not those who sinned, whose dead bodies fell in the wilderness? 3:18 And to whom did he swear they would never enter into his rest, except those who were disobedient? 3:19 So we see that they could not enter because of unbelief.