Charles H. Spurgeon on Psalms 139:6

Such knowledge is too wonderful for me, etc. When we are about to look upon God's perfections, we should observe our own imperfections, and thereby learn to be the more modest in our searching of God's unsearchable perfection: Such knowledge, saith David, is too high for me, I cannot attain unto it. Then do we see most of God, when we see him incomprehensible, and do see ourselves swallowed up in the thoughts of his perfection, and are forced to fall in admiration of God, as here. "Such knowledge is too wonderful for me; it is high, I cannot attain unto it." —David Dickson.