“When you trust God, and a friend, there is a question whether it is God you trust or the friend; but when the friend has left you, and only God is near, no question remains… If you can trust God when you are utterly lonely, then you really trust Him; you are a believer and there is no mistake about it. It is profitable to be driven into loneliness, that we may prove whether we are solely trusting God or not.
It is a bad thing to be standing with one foot on the sea and the other on the land. We must get both feet on the Rock of Ages, or the foot which stands upon the sea of changeful self will be our downfall. My soul, wait thou only upon God! Yea, though I walk through the dark valley, unattended by human companion, I will fear no evil, for my God is near.”
–Charles H. Spurgeon, “The Valley of the Shadow of Death,” The Journal of Biblical Counseling, Vol. 18, No. 3, 2000, p. 32.