Hebrews 11:1

So Jesus answered and said to them, “Have faith in God.” “For assuredly, I say to you, whoever says to this mountain, ‘Be removed and 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. Therefore I say to you, whatever things you ask when you pray, believe that you receive them, and you will have them.”

The God kind of faith. We develop this kind of faith by meditating the word. The meditation on the word brings revelation, and revelation increases our confidence. Our words are meant to mean something, and our words have power behind them to change circumstances. It takes faith in God and faith in our hearts to do this. Build up the faith on the inside and pray in belief on the outside and watch God work.