“This valley, dark and gloomy as it is, is not an unhallowed pathway. No sin is necessarily connected with sorrow of heart, for Jesus Christ our Lord once said, ‘My soul is exceedingly sorrowful, even unto death.’ There was no sin in Him, and consequently none in His deep depression.
We have never known a joy or a sorrow altogether untainted with evil; but grief itself is not necessarily sin. A man may be as happy as all the birds in the air, and there may be no sin in his happiness; and a man may be exceeding heavy, and yet there may be no sin in the heaviness. I do not say that there is not sin in all our feelings, but still the feelings in themselves need not be sinful.
I would, therefore, try to cheer any brother who is sad, for his sadness is not necessarily blameworthy. If his downcast spirit arises from unbelief, let him cry to God to be delivered from it; but if the soul is sighing, ‘Though he slay me, yet will I trust in him,’ it is not a fault.
If the man cries, ‘My God, my soul is cast down within me: therefore will I remember thee,’ his soul’s being cast down within him is no sin. Heaviness of spirit is not, therefore, on every occasion a matter for which we need condemn ourselves.
The way of sorrow is not the way of sin, but a hallowed road sanctified by the prayers of myriads of pilgrims now with God—pilgrims who, passing through the valley of Baca, made it a well.”
–Charles H. Spurgeon, “The Valley of the Shadow of Death,” The Journal of Biblical Counseling, Vol. 18, No. 3, 2000, p. 33.