From DSC:
Here are two really interesting pieces of scripture.  Seldomly do I read where the LORD Himself is amazed by something.  But note His being amazed in these cases — and they both involve the topic of faith (one on the negative side of things and one on the positive side of things; emphasis mine):

Mark 6:4-6

Jesus said to them, “A prophet is not without honor except in his own town, among his relatives and in his own home.” He could not do any miracles there, except lay his hands on a few sick people and heal them. He was amazed at their lack of faith.

Luke 7:8-10

8 For I myself am a man under authority, with soldiers under me. I tell this one, ‘Go,’ and he goes; and that one, ‘Come,’ and he comes. I say to my servant, ‘Do this,’ and he does it.”

9 When Jesus heard this, he was amazed at him, and turning to the crowd following him, he said, “I tell you, I have not found such great faith even in Israel.” 10 Then the men who had been sent returned to the house and found the servant well.

 

Other examples from scripture:

Hebrews 11:1

Now faith is confidence in what we hope for and assurance about what we do not see.

Galatians 3:5

So again I ask, does God give you his Spirit and work miracles among you by the works of the law, or by your believing what you heard?

Luke 17:19

Then he said to him, “Rise and go; your faith has made you well.”

Mark 5:24-34

A large crowd followed and pressed around him. 25 And a woman was there who had been subject to bleeding for twelve years. 26 She had suffered a great deal under the care of many doctors and had spent all she had, yet instead of getting better she grew worse. 27 When she heard about Jesus, she came up behind him in the crowd and touched his cloak, 28 because she thought, “If I just touch his clothes, I will be healed.” 29 Immediately her bleeding stopped and she felt in her body that she was freed from her suffering.

30 At once Jesus realized that power had gone out from him. He turned around in the crowd and asked, “Who touched my clothes?”

31 “You see the people crowding against you,” his disciples answered, “and yet you can ask, ‘Who touched me?’

32 But Jesus kept looking around to see who had done it. 33 Then the woman, knowing what had happened to her, came and fell at his feet and, trembling with fear, told him the whole truth. 34 He said to her, “Daughter, your faith has healed you. Go in peace and be freed from your suffering.”

 Luke 18:42-43

42 Jesus said to him, “Receive your sight; your faith has healed you.” 43 Immediately he received his sight and followed Jesus, praising God. When all the people saw it, they also praised God.