Romans 4:20-21

4:20 He did not waver in unbelief about the promise of God but was strengthened in faith, giving glory to God. 4:21 He was fully convinced that what God promised he was also able to do.

Romans 14:21

14:21 It is good not to eat meat or drink wine or to do anything that causes your brother to stumble.

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 14:31

14:31 Immediately Jesus reached out his hand and caught him, saying to him, “You of little faith, why did you doubt?”

Mark 9:23-24

9:23 Then Jesus said to him, “‘If you are able?’ All things are possible for the one who believes.” 9:24 Immediately the father of the boy cried out and said, “I believe; help my unbelief!”

John 20:27-28

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.” 20:28 Thomas replied to him, “My Lord and my God!”