But there is a wonderful change in tone, in the two halves of the psalm. The deliverance that seems so complete in the earlier part is but partial. The triumph and the trust seem both to be clouded over. A frowning mass lifts itself up against the immense mass of God's mercies. The Psalmist sees himself ringed about by numberless evils, as a man tied to a stake might be by a circle of fire. 'Innumerable evils have compassed me about.' His conscience tells him that the evils are deserved; they are his iniquities transformed which have come back to him in another shape, and have laid their hands upon him as a constable does upon a thief. 'Mine iniquities have taken hold upon me'--they hem him in so that his vision is interrupted, the smoke from the circle of flame blinds his eyes--'I cannot see.' His roused conscience and his quivering heart conceive of them as 'more than the hairs of his head,' and so courage and confidence have ebbed away from him. 'My heart faileth me----,' and there is nothing left for him but to fling himself in his misery out of himself and on to God. Now what I wish to do in this sermon is not so much to deal with these two verses separately as to draw some of the lessons from the very remarkable juxtaposition of these two innumerable things--God's tender mercies, and man's iniquity and evil. I. To begin with, let me remind you how, if we keep these two things both together in our contemplations, they suggest for us very forcibly the greatest mystery in the universe, and throw a little light upon it. The difficulty of difficulties, the one insoluble problem is----, given a good and perfect God, where does sorrow come from, and why is there any pain? Men have fumbled at that knot for all the years that there have been men in the world, and they have not untied it yet. They have tried to cut it and it has resisted all their knives and all their ingenuity. And there the question stands before us, grim, insoluble, the despair of all thinkers and often the torture of our own hearts, in the hours of our personal experience. Is it true that 'God's mercies are innumerable'? If it be, what is the meaning of all this that makes me writhe and weep? Nobody has answered that question, and nobody ever will. Only let us beware of the temptation of blinking half of the facts by reason of the clearness of our confidence or the depth of our feeling of the other half. That is always our temptation. You must have had a singularly unruffled life if there has never come to you some moment when, in the depth of your agony, you have ground your teeth together, as you said to yourself, 'Is there a God then at all? And does He care for me at all? And can He help me at all? And if there is, why in the name of pity does He not?'