Jesus said to them, “Have faith in God! I can guarantee this truth: This is what will be done for someone who doesn’t doubt but believes what he says will happen: He can say to this mountain, ‘Be uprooted and thrown into the sea,’ and it will be done for him. That’s why I tell you to have faith that you have already received whatever you pray for, and it will be yours.” [Mark 11:22-24 (GW)]

We need faith to pray, but as we pray we gain faith. True faith, however, includes faith in God’s will, not ours. God can do the impossible but he isn’t going to perform miracles to prove his existence to us. Am I disappointed because I haven’t moved a mountain by prayer? No, because there is no need for me to move any mountains. But, when I have prayed in faith, God has moved people, changed lives, and healed troubled souls. He has, indeed, performed miracles in response to prayers offered in faith.

Jesus looked at them intently and said, “Humanly speaking, it is impossible. But not with God. Everything is possible with God.” [Mark 10:27 (NLT)]