Charles H. Spurgeon on Psalms 119:8

O forsake me not utterly. This prayer reads like the startled cry of one who was half afraid that he had been presumptuous in expressing the foregoing resolve. He desired to keep the divine statutes, and like Peter he vowed that he would do so; but remembering his own weakness, he recoils from his own venturesomeness, and feels that he must pray. I have made a solemn vow, but what if I have uttered it in my own strength? What if God should leave me to myself? He is filled with terror at the thought. He breaks out with an "O." He implores and beseeches the Lord not to test him by leaving him even for an instant entirely to himself. To be forsaken of God is the worst ill that the most melancholy saint ever dreams of. Thank God, it will never fall to our lot; for no promise can be more express than that which saith, "I will never leave thee, nor forsake thee." This promise does not prevent our praying, but excites us to it. Because God will not forsake his own, therefore do we cry to him in the agony of our feebleness, "O forsake me not utterly." C. H. S.