Adam Clarke on Psalms 88:15

From my youth up - I have always been a child of sorrow, afflicted in my body, and distressed in my mind. There are still found in the Church of God persons in similar circumstances; persons who are continually mourning for themselves and for the desolations of Zion. A disposition of this kind is sure to produce an unhealthy body; and indeed a weak constitution may often produce an enfeebled mind; but where the terrors of the Lord prevail, there is neither health of body nor peace of mind.