Amen
The Bible says we are save by “grace” through faith and not of ourselves. Jesus also said noone can come to him except his Father draws him. A born again believer can not be unborn. That can not happen physically nor spiritually.
Jesus said no one can come to me except my Father draws him. Jesus also said to his disciples, you did not choose me, I chose you. With this understanding, If a person is saved, it is because God chose him or her. God cannot make misstakes.
We have to remember that salvation is a gift from God. Jesus said to his disciples, you did not choose me, but I chose you. Yes, a Christian may stray away, but like the Prodigal Son, they will eventually come back.
Supernatural healing is very controversial because many Evangelicals misinterpret why God used healing and other supernatural signs and wonders during the ministry of Jesus and the establishment of his church.