Matthew 14:26-31 When the disciples saw Him walking on the sea, they were troubled, saying, “It is a ghost!” and they cried out for fear.Immediately Jesus spoke to them, saying, “Be of good cheer! It is I; do not be afraid. Peter answered Him and said, “Lord, if it is You, command me to come to You on the water.” So He said, “Come.” When Peter had come down out of the boat, he walked on the water to go to Jesus. When he saw that the wind was boisterous, he was afraid; and beginning to sink he cried out, saying, “Lord, save me!” Immediately Jesus stretched out His hand and caught him, and said to him, “O you of little faith, why did you doubt?”
Matthew 21:21 So Jesus answered and said to them, “Assuredly, I say to you, if you have faith and do not doubt, you will not only do what was done to the fig tree, but also if you say to this mountain, ‘Be removed and be cast into the sea,’ it will be done. Mark 11:23 For assuredly, I say to you, whoever says to this mountain, ‘Be removed and be cast into the sea,’ and does not doubt in his heart, but believes that those things he says will be done, he will have whatever he says.
Acts 10:19-20 While Peter thought about the vision, the Spirit said to him, “Behold, three men are seeking you. Arise therefore, go down and go with them, doubting nothing; for I have sent them.”
Psalm 78:18-22, 32 They tested God in their heart By asking for the food of their fancy. Yes, they spoke against God: They said, “Can God prepare a table in the wilderness? Behold, He struck the rock, So that the waters gushed out, and the streams overflowed. Can He gave bread also? Can He provide meat for His people?” Therefore the Lord heard this and was furious; So a fire was kindled against Jacob, and anger also came up against Israel, Because they did not believe in God, and did not trust in His salvation. In spite of this they still sinned, and did not believe in His wondrous works.
Matthew 8:13 Then Jesus said to the centurion, “Go your way; and as you have believed, so let it be done for you.” and his servant was healed that same hour.
Matthew 9:28-29 When He had come into the house, the blind men came to Him. And Jesus said to them, “Do you believe that I am able to do this?” They said to Him, “Yes, Lord.” Then He touched their eyes, saying, “According to your faith let it be to you.
Mark 9:23-24 Jesus said to him, “If you can believe, all things are possible to him who believes.” Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.
Mark 16:9-18 Now when He rose early on the first day of the week, He appeared first to Mary Magdalene, out of whom He had cast seven demons. She went and told those who had been with Him, as they mourned and wept. When they heard that He was alive and had been seen by her, they did not believe. After that, He appeared in another form to two of them as they walked and went into the country. They went and told it to the rest, but they did not believe them either.
Later He appeared to the eleven as they sat at the table; and He rebuked their unbelief and hardness of heart, because they did not believe those who had seen Him after He had risen. He said to them, “Go into all the world and preach the gospel to every creature. He who believes and is baptized will be saved; but he who does not believe will be condemned. These signs will follow those who believe: In My name they will cast out demons; they will speak with new tongues; they will take up serpents; and if they drink anything deadly, it will by no means hurt them; they will lay hands on the sick, and they will recover.”
James 1:6 Let him ask in faith, with no doubting, for he who doubts is like a wave of the sea driven and tossed by the wind.