MH page 112

The Saviour in His miracles revealed the power that is continually at work in man's behalf, to sustain and to heal him. Through the agencies of nature, God is working, day by day, hour by hour, moment by moment, to keep us alive, to build up and restore us. When any part of the body sustains injury, a healing process is at once begun; nature's agencies are set at work to restore soundness. But the power working through these agencies is the power of God. All life-giving power is from Him. When one recovers from disease, it is God who restores him.

God's sustaining and healing power operates continuously through natural agencies and biological recovery processes. While mentioning biological healing processes, the primary focus is attributing those processes directly to divine agency rather than testing empirical variables.