Would God Heal an Unbeliever?
Under the New Covenant, He already DID heal all unbelievers from a legal perspective! Healing as well as the new birth and many other benefits are there for the taking for everyone, so the issue is finding out what God has provided and receiving it, not trying to get God to be willing to heal. His will is already established. He wants to heal ALL unbelievers!
The idea that God will insist that you become born again BEFORE He will heal you is not found in Scripture. Consider that no one whom Jesus healed in the gospels was born again! No one who got healed in the entire Old Testament was born again, either! God healed them when they were unbelievers (by New Testament standards), and God’s mercy to the unsaved has surely not diminished under our better covenant today.
Thus, an unbeliever can exercise faith for healing, and even “great faith,” as Scripture shows (Matthew 8:5-13).
The primary reason that God uses gifts of healings, working of miracles and special faith (see 1 Corinthians 12:8-11) is to demonstrate His goodness and power to unbelievers and confirm the resurrection of Jesus! A believer can receive healing through faith and does not technically need any of these gifts to be in operation, although God will sometimes move through these gifts to heal believers, too. God will sometimes heal an ornery unbeliever through these manifestations of the Spirit – don’t get jealous! God is showing His goodness and mercy to him. (Remember, you can get healed by faith, so God hasn’t left you out or preferred the unbeliever over you.)
You can share Jesus with unbelievers and lay hands on them for healing, expecting this sign to follow and confirm the Word that you shared (see Mark 16:20). They may or may not get saved, but they will have a good reason to when they see the “goodness of God that leads men to repentance” (Romans 2:4). This is surely a more effective method of evangelism than threatening people with stories about 666 and the mark of the beast and how if they don’t get saved, they’ll be left behind when the Church is caught up with Jesus in the clouds. It is quite natural to want to follow Jesus after He just healed you of some horrible disease.
Check out the nobleman in John 4:46-53. He did not “believe” in the sense of accepting who Jesus was until AFTER he believed for a miracle for his son!
So it is possible for an unbeliever to receive healing by faith without accepting Christ! (I wouldn’t recommend this to anyone, obviously, given the eternal consequences of rejecting Him.)