The Power of the Holy Spirit heals both material and spiritual ills .-- Daily Lessons Received at Akka, p.
95.
Again He writes to one who is ill:-- Verily the Will of God acts sometimes in a way for which mankind is unable to find out the reason.

The causes and reasons shall appear.

Trust in God and confide in Him, and resign thyself to the Will of God.

Verily thy God is affectionate, compassionate and merciful ...

and will cause His Mercy to descend upon Thee.
He teaches that spiritual health is conducive to physical health, but physical health depends upon many factors, some of which are outside the control of the individual.