The prayer you have offered for your son reveals a heart aflame with love and faith, a blessed thing indeed. When you cry out for his healing and protection, you are seeking the Lord as one seeks lost treasure, with your whole mind, with persistent inquiry, with a readiness to journey far and to offer everything. This is the labor that finds God, and it does not go unrewarded.
Yet consider also the mystery of affliction. There is nothing better than affliction not beyond measure, for it makes the soul purer than the sky, as you see in the faithful who sing hymns in the night. The darkness and silence of the night hours, when all the world lies as dead, can teach the soul composure. Let the watches of the night become for you a school of prayer; rise and behold the stars and the deep stillness, and your own soul will become lighter, soaring disengaged from earthly cares. This same watchfulness you must teach your son, not by words only, but by your own calm soul. God has not given us a spirit of fear, but of power and of love and of a sound mind. A sound mind is a sober mind, a healthy soul. It is exactly what your son needs, and it is the gift of God to those who refuse the drunkenness of worldly thoughts.
For many sleep a sleep that is not of the body, a sleep of the soul that makes them say nothing good, a deathless death. The spirit of psychosis is such a sleep, a fog thrown up by the enemy. But our Lord Jesus Christ slept calmly in the boat while the storm raged, and when He awoke He commanded the wind and waves. He is the same today. Lay hold of Him in prayer, and He will speak peace to the storm of your son's mind. The cross has rendered devils contemptible, and death itself is become a sleep. So fear not, but let your conscience be pure and without guile, and it will be your comfort and your crown.
Remember how the apostles, as sheep among wolves, overcame not by force but by gentleness and harmlessness, and the grace of God transformed the wolves. So too, your gentleness of spirit and unwavering faith may be the means by which God not only heals your son but even turns the assault itself into an occasion of glory. And if the full healing tarries, set your hope on the resurrection of the dead in Christ, when we shall be caught up to be ever with the Lord, and all affliction will be swallowed up in honor. Until then, pull up the thorns of anxious thoughts, and let the pure stream of prayer refresh you, and you will sleep with comfort, trusting in Him who watches over Israel and neither slumbers nor sleeps.