Now, this figure of the Book of Life appears in Scripture at intervals, almost from the beginning to the very end. The first instance of its occurrence is in that self-sacrificing, intercessory prayer of Moses, when he expressed his willingness to be 'blotted out of Thy book' as an atonement for the sin of Israel. Its last appearance is when the Apocalyptic Seer is told that none enter into the City of God come down from Heaven 'save those whose names are written in the Lamb's Book of Life.' Of course in plain English the expression is just equivalent to being a real disciple of Jesus Christ. But then it presents that general notion under a metaphor which, in its various aspects, has a very distinct and stringent bearing upon our duties as well as upon our blessings and our hopes. I, therefore, wish to work out, as well as I can, the various thoughts suggested by this emblem. I. The first of them is Citizenship. The figure is, of course, originally drawn from the registers of the tribes of Israel. In that use, though not without a glance at some higher meaning, it appears in the Old Testament, where we read of 'those who are written among them living in Jerusalem'; or 'are written in the writing of the house of Israel.' The suggestion of being inscribed on the burgess-rolls of a city is the first idea connected with the word. In the New Testament, for instance, we find in the great passage in the Epistle to the Hebrews the two notions of the city and the census brought into immediate connection, where the writer says, 'Ye are come unto the city of the living God . . . and to the church of the first-born whose names are written in heaven.' In this very letter we have, only a verse or two before my text, the same idea of citizenship cropping up. 'Our _citizenship_ is in Heaven, from whence also we look for the Saviour.' That, no doubt, helped to suggest to the Apostle the words of my text. And there is another verse in the same letter where the same idea comes out. 'Only act the citizen as becometh the Gospel of Christ.' Now, you will remember, possibly, that Philippi was, as the Acts of the Apostles tells us, a Roman colony. And the reference is exquisitely close-fitting to the circumstances of the people of that city. For a Roman colony was a bit of Rome in another land, and the citizens of Philippi had their names inscribed on the registers of the tribes of Rome. The writer himself was another illustration of the same thing, of living in a community to which he did not belong and of belonging to a community in which he did not live. For Paul was a native of Tarsus; and Paul, the native of the Asiatic Tarsus, was a Roman.