Scientists tell us that the sun is fed and kept in splendour by the constant impact of bodies from without falling in upon it, and that if that supply were to cease, the furnace of the heavens would go out. But God, who is light in Himself, needs no accession of supplies from without to maintain His light, and no force of motives from without to sway His will. We do not need to seek to bend Him to mercy, for He is mercy in Himself. We do not need to stir His purpose into action, for it has been working from of old and 'its goings forth are from everlasting.' He is His own motive, He forgives because of what He is. So let us dig down to that deepest of all rock foundations on which to build our confidence, and be sure that, if I may use such an expression, the necessity of the divine nature compels Him to pardon iniquity, transgression, and sin. Then there is another thought here, that the past of God is a plea with God for present forgiveness. 'Thy name' in Scripture means the whole revelation of the divine character, and thus the Psalmist looks back into the past, and sees there how God has, all through the ages, been plenteous in mercy and ready to forgive all that called upon Him; and he pleads that past as a reason for the present and for the future. Thousands of years have passed since David, if he was the Psalmist, offered this prayer; and you and I can look back to the blessed old story of _his_ forgiveness, so swift, so absolute and free, which followed upon confession so lowly, and can remember that infinitely pathetic and wonderful word which puts the whole history of the resurrection and restoration of a soul into two clauses. 'David said unto Nathan, I have sinned against the Lord: and Nathan said unto David'--finishing the sentence--'And the Lord hath made to pass the iniquity of thy sin.' What He was He is; what He is He will be. 'For Thy name's sake, pardon mine iniquity.' There is yet another thought that may be suggested. The divine forgiveness is in order that men may know Him better. That is represented in Scripture as being the great motive of the divine actions--'for the glory of Thine own name.' That may be so put as to be positively atrocious, or so as to be perfectly divine and lovely. It has often been put, by hard and narrow dogmatists, in such a way as to make God simply an Almighty selfishness, but it ought to be put as the Bible puts it, so as to show Him as an Almighty love. For why does He desire that His name should be known by us but for our sakes, that the light of that great Name may come to us, 'sitting in darkness and in the shadow of death,' and that, knowing Him for what He is, we may have peace, and rest, and joy, and love, and purity? It is pure benevolence that makes Him act, 'for the glory of His great name'; sweeping away the clouds that a darkened earth may expand and rejoice, and all the leaves unfold themselves, and every bird sing, in the restored sunshine.