Dear Miss Rainy,
What i have found is that in many ways we do not serve a simplistic, black and white God and that He definitely has His mysteries. I have seen people with unforgiveness get healed and others not... and then when those with unforgiveness that didn't get healed initially lay the unforgiveness at the Lord's feet, some then get healed and others still do not. People with a lot of compassionate experience in this area have come up with a list of about 40 blockages that can possibly interfere with healings... and this list was developed based upon experiences with this of people who did not receive healing until something on this list was uncovered and eliminated... at which point they were able to be instantly healed. Some of the hardest people to help are those who don't believe that the Lord's instant miracles prayed through His servant's prayers are still for today, that these instant miracles were only able to be prayed by servants of God in the bible. Mostly this is a blockage because those who think this way won't even agree to receive the prayer in the first place due to their hard heartedness or even if they did allow the prayer, it would be in the hope of proving that they are right, which more than likely, due to their own stubborness, they would be right in their own life and they would cheat themselves out of their own healing :). To get a picture in your head that applies very similarly to people with the same spirit today, imagine a proud pharisee in his unwillingness to allow Lord Jesus to pray for him.
Thankfully, many hearts are open and many do receive instant healings, not only physical, but also emotional and spiritual. There are other mysteries too, for example, sometimes people receive an instant healing, but then the affliction returns the next day. People sometimes receiving partial healings as opposed to perfect full healings are another area of mystery. It's important to note also that i don't believe people are not healed because God is mad at them, but rather that the system of free will has been set up and this includes what the enemy is allowed to do to oppress and afflict people based on spiritual laws. Most commonly, when legal grounds are removed from the enemy to oppress us (some might say "always", but i won't make a doctrine out of this), we are able to get instantly healed and stay healed. Living diligently dead to flesh and in the Spirit, continually crucifying and re-crucifying any flesh that would attempt to rise up does definitely allow for a much more abundant life in Jesus to be lived. This is included in what the Lord meant when He said, "repent for the Kingdom of Heaven is at hand". He meant now in this lifetime as well as whatever He was referring to eternally. True repentance is truly choosing to surrender to God and allow Him to live through us, crucifying flesh every step of the way, seeking His help in this and doing our part as well with the free will we have been given. Many are holding onto flesh behaviors and attitudes but don't realize that this is what they are doing, but when we are deeply surrendered in the Lord's ways, it is true that we will have His peace and joy in our lives that are unsurpassing and unshakable in all circumstances. People will live for example in a high level of stress, irritability and anger and not think that this is flesh living, something to be continually crucified... but certainly it is :).
I don't believe anybody but God Himself knows how this all works, but i do know that there is a very real enemy who will continue to battle, to do everything within it's legal rights to prevent and to steal back healings, deliverances and holy blessings as well as stealing back seed planted in people's hearts diverting them from running passionately after Lord Jesus... and will use every legal justification it can to do so. Often the reasons some people sometimes get healed initially, but lose the healing over the next day are the very reasons others do not get healed in the first place. Often people will not receive a physical healing until they are healed emotionally and sometimes this can turn out to have been from an unresolved childhood trauma and the emotional walls that have gone up as a result of this, very commonly molestation or other forms of sexual abuse and/or emotional or physical abuse being the root cause. I have helped several people recently who have been struggling with these kind of things their entire lives to release the hurt and unforgiveness from this and invite Lord Jesus to come in and heal them. One blockage to healing can be caused by extreme fear of facing what happened and avoiding doing so, rather than facing it and allowing and trusting Lord Jesus to come into this situation and bring His healing.
I also believe that as with a gift for singing or teaching, as someone practices their gift, and as they develop deepened faith in what the Lord will do through this gift, they grow stronger and stronger in it. Was Elijah instantly the Elijah we know, or is this something he grew into? We know for sure that Elisha received a double portion. A double portion of what? Would one suitable word maybe be anointing for miracles? Many believe that God does all the work, but actually He chooses to include His children in His work and they have an important part in releasing His miracles, today just as was true all throughout the bible. Peter was walking on water one minute and sinking the next, all according to His faith. Disciples commanded a demon out of a child and the demon did not come out... then Lord Jesus came along and the demon obeyed. Why does God work through the prayers of the disciples sometimes and not others? This example shows very clearly that a level of something was a factor in this boy's deliverance, something which the disciples did not have enough of and Lord Jesus did. Clearly faith was an important factor in this example and i believe that faith is a substance which is a highly important factor in the overall anointing the servant of God will carry. i believe that anointing is the overall ability to access the power of God who lives by His Spirit inside of us. The same is also true in servant's of the Lord today. There are varying levels of anointing to pray various miracles. I believe one person moving in healing will release a lot of instant miracles in the area of pain in the body and maybe no successes at this stage with blindness, deafness or paralysis. Why are some of the Lord's servant's today able to pray instant healing miracles for blind eyes and deaf ears to open, but we don't see amputated limbs instantly growing out? Since we all know that the creator of all there is and ever will be can do anything, why does He not do this?... or maybe He has and i am not aware of it. I believe it's because it is limited to the level of anointing He has placed in each of His servants based upon a million factors. Miraculous breakthrough prayer (like singing or teaching) is a gift that God's servants build upon with experience. As in the parable of the talents, continued faithful stewardship of whatever one has been given yields continued increases in these gifts from the Living God.