Now in the morning, as they passed by, they saw the fig tree dried up from the roots. And Peter, remembering, said to Him, “Rabbi, look! The fig tree which You cursed has withered away.”
So Jesus answered and said to them, “Have faith in God. 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. Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.
The New King James Version (Mk 11:20–24). (1982). Thomas Nelson.
I have already mentioned through these devotions from Mark, the many times Jesus is teaching His twelve disciples lessons they need to learn. Many of these lessons and teachings can be applicable to believers today, but then we find the occasion when the teaching is very specific to the twelve themselves and pertinent to what they would face in the weeks and months ahead. This dialogue is one of those. It is a directive and a promise to these men that will shortly face impossible situations, that only God can change or overcome. He is speaking about what they will need to overcome the forces of evil as the church will begin to take shape and begin to spread throughout the entire known world. Many today have claimed these verses as God's promise that He will give us anything we want if we just ask in faith. Now, although faith in prayer is needed always, and can move mountains (metaphoric), it is not because we believe it, but God who chooses to give it. This instruction to the twelve also was for a time only, as we know they all faced hardships, imprisonments, and martyrdom. No amount of faith was able to change those situations, only give them the strength to face them.