Mark 11:21-23

21And remembering, Peter said to Him, “Rabbi (Master), look! The fig tree which You cursed has withered!”

22Jesus replied, “Have faith in God [constantly].

23I assure you and most solemnly say to you, whoever says to this mountain, ‘Be lifted up and thrown into the sea!’ and does not doubt in his heart [in God’s unlimited power], but believes that what he says is going to take place, it will be done for him [in accordance with God’s will].