Mark 11:20-23

In the morning, as they were passing by, the disciples saw that the fig tree had withered away from the roots up. And remembering, Peter said to Him, “Rabbi (Master), look! The fig tree which You cursed has withered!” Jesus replied, “Have faith in God [constantly]. I 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]. [Matt 17:20; Luke 17:6; 1 John 5:14]