Seems to me it is a misunderstanding of what he is doing. I think he is declaring your healing and saying he believes God will answer his prayer.
Child like faith does move mountains, and while there are plenty of unbiblical practices going on, I don't think this is one of them, nor do I think he is declaring it because "he said so." (limited info here, hoping all things 1 Corinthians 13:7)
I personally have lived around believers that might should have been called cautious doubters all my life, and I feel God has shown me there is an epidemic of it, doubting, that is, in the Church (Body of Christ).
I feel it has affected me to be around it, and I think sometimes our attempts to be humble or respectful or "stay in our place" are actually out of line with scripture.
I have an ailment (or two or three lol) myself. It is better than it used to be, I've prayed all my life for healing, but it isn't removed from me. Why? Part of me really does feel strongly it is partly due to lack of faith / unbelief on my part. I don't want to admit that, but I think it is true.
Mark 11:24 says that if you believe you have received it, that it is already yours. I think we underestimate Lord Jesus' words here, and Matthew 18:3 applies to this also I personally believe.
That doesn't mean I don't think some things are used for God's glory, maybe even my situation possibly, but I think we put too many things in that category to cover over doubt.
Also, the only (literally I think) account where it "wasn't" God's will to heal a person, it actually was God's will and was rather lack of faith / unbelief on the disciple's part. (Matthew 17:20)
The Lord Jesus literally told them they failed to cast out the infirmity and the spirit causing it, because they were doubting, and that they needed to pray and fast more to increase their faith to fix weak belief.
I've seen many people being healed by now, and I mean many. In videos mostly, yes... but there are far too many of them and these are cheap tiny church videos on phones, not a Benny Hinn convention I'm talking about. The prayers are always short, the people praying for them are the same people that have been sitting next to them in Church for years, they just suddenly did what the book of James said and touched them with a hand and prayed for them.
I feel like I have very strong faith in Lord Jesus and His ability to heal me, I believe God loves me with an infinite love, and I believe He wants to heal me... but I personally think "I" am the disciples right now, because I think they thought they had faith at the time. They did......... try to cast the demonic spirit out.
I wouldn't count the man a heretic or the people there and write them off completely too too quickly for declaring he believes God already answered the moment he prays (2 Corinthians 1:20). They have child like faith and I think many of us "adults" sometimes complicate things until it is too hard to believe what God actually says without doubting at all it is true and will happen just as He said it would if we pray.
Just my 2 sentiments cents.
