Morton Kelsey, in his in-depth study, Healing Christianity, 1995, offers this for us to ponder.
Finally, there is a religious or sacramental healing, the result of the healer’s conscious and deliberate relation to God. The healers as individuals are not viewed as the primary source of healing power. Rather they are seen as an agency through which the Spirit and power of God, the very creative force of the universe, is transmitted. The acts of healing depend on the power of God and are therefore sacramental. Spiritual healing is an outer and visible sign of particular grace, inward and spiritual, at work within both the healer and the one who seeks healing (p, 67).