The poet is perfectly confident that when God takes His people in hand to lead them round to Himself He will surely do so. If He turns them they will be turned. The words suggest that previous efforts had been made from other quarters, and had failed. The prophets, speaking from God, had urged repentance, but their words had been ineffectual. It is only when God undertakes the work that there is any chance of success. But then success is certain. This truth was illustrated in the preaching of the cross by St. Paul at Corinth, where it was found to be the _power_ of God. It is seen repeatedly in the fact that the worst, the oldest, the most hardened are brought round to a new life by the miracle of redeeming power. Herein we have the root principle of Calvinism, the secret of the marvellous vigour of a system which, at the first blush of it, would seem to be depressing rather than encouraging. Calvinism directed the thoughts of its disciples away from self, and man, and the world, for the inspiration of all life and energy. It bade them confess their own impotence and God's almightiness. All who could trust themselves to such a faith would find the secret of victory. Next, we see that the return is to be a renewal of a previous condition. The poet prays, "Renew our days as of old"--a phrase which suggests the recovery of apostates. Possibly here we have some reference to more external conditions. There is a hope that the prosperity of the former times may be brought back. And yet the previous line, which is concerned with the spiritual return to God, should lead us to take this one also in a spiritual sense. We think of Cowper's melancholy regret-- "Where is the blessedness I knew When first I saw the Lord?" The memory of a lost blessing makes the prayer for restoration the more intense. It is of God's exceeding lovingkindness that His compassions fail not, so that He does not refuse another opportunity to those who have proved faithless in the past. In some respects restoration is more difficult than a new beginning. The past will not come back. The innocence of childhood, when once it is lost, can never be restored. That first, fresh bloom of youth is irrecoverable. On the other hand, what the restoration lacks in one respect may be more than made up in other directions. Though the old paradise will not be regained, though it has withered long since, and the site of it has become a desert, God will create new heavens and a new earth which shall be better than the lost past. And this new state will be a real redemption, a genuine recovery of what was essential to the old condition. The vision of God had been enjoyed in the old, simple days, and though to weary watchers sobered by a sad experience, the vision of God will be restored in the more blessed future.