Jesus said, "I will come and heal him." But the officer said, "Lord, I am not worthy to have you come into my home. Just say the word from where you are, and my servant will be healed. - Mt 8 : 7 - 8
There is this Roman officer, whose servant is very sick and paralyzed. So he went to meet and asked Jesus to heal his servant. But, when Jesus wanted to go with him, he refused, he only asked Jesus to say the word from where Jesus is. And he believe that his servant will be healed.
Even Jesus is amazed by this man's faith, let alone us. So often in life, we are faced with problems and we asked God for help, but when God speak the Word, did we believe? We heard that whatever the Bible says, we could have it. But aren't we lacking something? The believing part!
A lot of us, we came to God saying, "God heal me", "God do this ... God do that ..." Stop that if you do not believe God can do that. Check our heart, and then we asked again.
No faith is too great for God; only faithless is a concern for Him.