We can heal the sick through God's power if we consciously reflect God. That man always reflects God is a scientific truth, but unless we are actively conscious of ourselves reflecting the qualities of God, the healing work we do for ourselves and others will be more spasmodic than scientific.
Much of our failure to heal consistently and scientifically is due to ignorance of what God is and of what we are as His reflection. This seems to be an educated ignorance, wherein we are so mentally wrapped up in material personalities, conditions, and events that our minds have room for only a surface acquaintance with spiritual truths. But even when we begin to dig deeper into the real nature of man as the reflection of infinite Spirit, God, we may tend to willfully neglect the quality of mercy—one of God's qualities that enables us to see through the material sense of life and to heal the conditions that have their existence in it.
The diseases of the body, as well as the diseases of the human civilization and of the earth, exist only in the belief of life in matter. That this belief is false and can be overcome through God's mercy was proved by Christ Jesus when he healed multitudes of their diseases and when he carried out his promise, "Destroy this temple, and in three days I will raise it up."
john 2:19 The temple he referred to was his body; and he not only raised it from the tomb, but he demonstrated that the material senses that beheld him as a material being were false. He ascended, finally leaving no body to be buried.