How to change established things
Things that look impossible
And in the morning, as they passed by, they saw the fig tree dried up from the roots. And Peter calling to remembrance saith unto him, Master, behold, the fig tree which thou cursed is withered away. And Jesus answering saith unto them, Have faith in God. For verily I say unto you, that whosoever shall say unto this mountain, be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith. Therefore, I say unto you, what things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them. And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses. Mark 11:20-25
This event occurred in the middle of the week before Jesus would be crucified on Friday. In just a few days, the disciple's way of communicating with Jesus would change completely. They would be like we are: prayer would be their only communication with Jesus. For three years, the disciples had lived in the constant presence of Jesus. As you know, they walked, talked, worked and ate their meals together. When they needed tax money, Jesus provided that from the mouth of a fish. No food? No problem. Jesus could break it and bless it so that just a few fish and loaves of bread could feed 5000. All of that is about to change. Jesus would not be here to meet their every need.
In the future, they would need to know how to perform miracles like Jesus. I believe the purpose of the fig tree miracle was to teach them they had access to this same "God power" through faith and prayer.
The next morning after Jesus had told the fig tree to dry up and never produce fruit again, (Mark 11), they passed the tree again. Peter was amazed and surprised to see it actually had obeyed Jesus' command. He exclaimed, "Look the fig tree died! It's withered from the roots up!". I can just hear him ask, "How does that kind of power work? How did that happen?"
Jesus' only answer was, "Have faith in God. Whoever says to this mountain be thou removed and be cast in the sea and believes and does not doubt in his heart, it will happen. - he'll receive what he asks." In other words, the power to change things that look established comes only from God. Our faith has got to be in what God can do. We have no power to speak to a tree and it die.
We like to think we can be good enough; spiritual enough to move mountains in our lives, but the power to move mountains has got to come through our faith in what God can do. God does the changing. God does the moving. Our faith has got to be in what God can do.
I believe He's telling the disciples, "Don't be afraid to ask for big things. Things you can't change or do anything about, like moving mountains." It may not have been literal mountains that he was talking about, but we know for sure he was talking about moving things that seem impossible. Have you got any impossible things you want moved out of your life? I do. Our faith has got to be in what God can do. He is the Source for that kind of power to work.
What about the matter of doubt? I don't believe He was talking about doubting ourselves, but doubting God. We doubt ourselves quite often, but it's God's power we can't doubt. How much faith do we have to have to activate this kind of mountain moving prayer? Not much. Belief is powerful. Jesus said, "If ye have faith as a grain of mustard seed, ye shall say unto this mountain, remove hence to yonder place; and it shall remove; and nothing shall be impossible unto you" (Matthew 17:20).
It doesn't take great faith as long as the faith we do have, is in God's power, not ours.