Recently I heard one of the top tennis players say, (with regard to improving his game to beat the top players). “By creating that belief system within myself, I created my own reality”. And he became number one. This mirrors the words of Jesus in regard to “Believe that you have it, and you will”. The strength (conviction) of a belief is what guides and shapes ones destiny. The former was concerned with earthly things, the latter eternal – yet a lot of things eternal are also bound up with the physical, such as healing.
One of the most profound things a person can believe is that God loves them. If they believe it enough, their lives will be greatly transformed. It is the cross that brings this message, and only the cross. God so loved the world that he gave his only son that whoever believes will not die but have eternal life. He loved enough to suffer so that love might conquer our hearts and minds in order to generate such a belief in us that we would embrace him and his love, available as the Spirit, and consequently serve his purpose which is to be a creature of love.
[ The fundamental belief is that Jesus has already healed us.]