In Matthew Chapters 9 and 10, God performed a lot of miracles like raising the dead, healing the paralyzed and casting out demons from afflicted people but one thing that is common to everyone, who received their healing is their faith in God. Everyone, who got their healing believed that God was able to help them. This is also applicable to you and me, we need to trust God absolutely if we want to experience his might hand in the situations we are trusting him for. Heb 11:13- 'For without faith, it is impossible to please God.' Please take note of the word 'impossible.' You cannot get that thing from God if you are doubting him in your heart. Doubt is the absence of faith and the presence of fear. Even if you have been believing God, keep trusting him, He will come through..'He is faithful'