Jesus said unto him, If thou canst believe, all things are possible to him that believeth. (Mark 9:23)
There is no limit to the potential of a man who lives his life governed by faith. That’s precisely what Jesus was teaching in Mark 9. Consider for a moment the bombastic quality of those four words: All things are possible.
Someone once asked how long people can expect to live. The answer for the believer is “as long as you are willing to believe.” How long you want to live is really up to you. We just read that Jesus said, “All things are possible to him that believeth.”
However, that begs the question of what exactly it looks like to believe.
First, you need to hear something. You cannot believe in what you have not heard. You must listen to it for that to be possible. You must hear the Word of God about what you want to believe.
Second, you need to receive and accept it. You make a heart decision that says, "This isn’t just words on a page; this is God speaking to me, and I believe that I can have it!"
Once you accept it, you need to start speaking it. The Bible says that out of the abundance of the heart (acceptance), the mouth speaks. You need to start changing your declaration from doubt to one full of faith in your beliefs.
Finally, you need to act on it. Don’t tell me you believe you will live past 120, yet you avoid exercise, eat fast food every day, and live without purpose. Choosing unhealthy habits shows that you don’t believe you’ll live a long, full life because you would act on your faith if you did.
Practical Application
Be purposeful about the words you allow to come out of your mouth, especially about aging. Replace phrases like “I'm getting old” with Biblical truth, like “I am strong in the Lord and the power of His might.” You will change your words and actions to agree with your faith if you believe.