Have you ever wondered why Jesus had such great faith? Jesus had great faith because He spoke only that which He heard His Father say. when He did, it caused faith to come. Faith that is in God's Word gets into your spirit when you speak it.
The Bible does not say that faith comes by reading. No ... it says that faith comes by hearing. In order for you to hear something, it must be spoken. It's more powerful when you hear it spoken out of your own mouth because you receive what you say more readily than you receive what someone else says.
The words you speak affect you more than anyone else's words. You may get some faith by hearing me speak the Word of God, but faith will come to you more quickly when you speak it out of your mouth. That's why God told Joshua to keep His Words in his mouth day and night. In other words, Joshua was to keep saying what God said.
Joshua 1:8 ...The Book of the Law shall not depart out of your mouth, but you shall meditate (think continually) in it day and night,that you may observe to do all that is written in it: for then you shall make your way prosperous and then you shall have good success.
When Satan came against Jesus, tempting Him in the wolderness, He responded by speaking only what His Father said. Jesus said, "IT IS WRITTEN ..." (Matthew 4:4,7,10).
This is how you become highly developed in the God kind of faith.
Reverend Robert W. & Mary C. Butler