God Himself exercises faith. Faith is believing the Word of God and expecting it to be fulfilled. When God speaks, He always has an expectation that it will be fully accomplished:
For as the rain comes down, and the snow from heaven, and do not return there, but water the earth, and make it bring forth and bud, that it may give seed to the sower and bread to the eater, so shall My Word be that goes forth from My mouth; it shall not return to Me void, but it shall accomplish what I please, and it shall prosper in the thing for which I sent it. (Isaiah 55:10-11)God is also the source of our faith. Don’t try to come up with your own faith — you’ll never make it. Instead, have faith of God. That’s what Jesus told the disciples in Mark 11:22. Your version might read “Have faith in God,” but the literal Greek is “Have faith of God.”
Before you can have faith in God, you must have faith of God — that is, the faith that comes from God. Paul said that faith is the gift of God (Ephesians 2:8). This faith comes by hearing the Word of God (remember that God always expects His Word to be fulfilled), so get heavily involved in the study and meditation of the promises of His Word.
God uses faith in the same way He expects us to use it. He speaks it out. In Genesis 1, God spoke forth His Word to create: “Let there be light,” or “Light, be!” and there was light. In Mark 11, Jesus spoke out His faith by His words: He rebuked the fig tree and it withered from the root. Then He taught the disciples to use faith in the same way:
Have faith [of] 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. (Mark 11:22-23)God is all about faith. Are you? Understand where faith comes from, how faith comes, and how to exercise it. Then go out and move the mountains of your life.