Let me quit dancing around here and just outline the problem I have with this Health/Wealth kind of false teaching.
Hear me well any who proclaim this type of false teaching for it will not go well with you.
First... To say that a person just doesn't have enough faith is the reason they are not healed is an out right lie straight from the Father of Lies, Satan himself.
You want to know why?
Because God takes care of His children and their needs regardless of what, when or how they ask. Matthew 6 You don't have to believe when you pray for something. It is best when you believe God has the power to answer your prayers. But, God is not a genie in a bottle up there to grant every wish or desire.
Go read Acts 12. Peter was amazed he was standing outside the prison. The church was absolutely shocked that Peter was standing outside the door completely free.
Please note, I am not at all denying clear Scripture that we have not because we ask not. (James) I am trying to point out that God's compassion for His people is overwhelming!
Jesus brought back to life the widow's son...just because He had compassion on her.
The storm at sea was calmed completely without the faith of the disciples.
The 5000 were fed without the faith of the disciples or the crowd.
The 4000 were fed without the faith of the disciples or the crowd.
The water was turned into wine at Cana without the faith of the servants.
The man at Bethesda Pool was healed by Someone he didn't even know.
Through no help of the disciples, Jesus walked on water.
Through no help of any one of us, Jesus was raised from the dead.
God does not need our help to do anything. However, God requires us to grow Spiritually in Him. There is no 12 Step Program to follow for God to grant our wishes. There is nothing magic about God's miracles. He pours out His blessings upon us because He loves us and cares for us and wants us to have the best and because we obey Him and put Him above all in our lives.
Seek ye first God's face and everything else will be added to you. From Genesis to Revelation there are multiple examples of God taking care of His people who are called by His name. Praying in the Spirit is NOT just for a special few of God's people called by His name. This is something that is given to all True Believers along with their very own motivational Spiritual Gift. Praying in the Spirit is not achieved by speaking in some garbled estatic tongue only understood by God Himself. Praying in the Spirit is achieved by being wholy in tune with the Lord, having the desires of the Lord in the heart attitude and having Jesus as the Lord of all aspects of life. Praying in the Spirit is achieved by turning one's back on enticing sin, by repenting any practiced sin. It isn't some magic formula. It is not a mantra to be "performed".
And for this reference--read all of Paul's letters plus Hebrews. And when you pray, do not heap up phrases (multiply words, repeating the same ones over and over) as the Gentiles do, for they think they will be heard for their much speaking. Matt 6:7
The reason God did not do in Athens what He did in Ephesus is this: The Athenians did not recognize their need for God. God stooped to the level of the Ephesians and met them there with all His miracles. The Athenians refused to even meet God on their own level.