In the first place, we find in it an explicit and most clear declaration of the Catholic Faith regarding the Blessed Trinity, especially the distinction of three persons, and the Divinity of each of these Divine Persons. “O God the Father Almighty, O God of Hosts, help us! Help us, O Almighty God! O Jesus Christ! Help us, O Almighty God, O Holy Spirit!” We are in the next place struck by the extraordinary familiarity with the Holy Scripture which the writer evinces. There is scarcely one of the epithets which is not found in the sacred pages, almost in the precise words used by him, beginning with the first words, addressed to the Eternal Father, “O God of Hosts”, the _Deus Sabaoth_ of the Prophets, and going on to the last invocation of the Holy Ghost, “Spirit of love”, which comprises in itself the two inspired phrases: “_Spiritus est Deus_”, and “_Deus Charitas est_”. We may also remark the coincidence between Saint Aireran and the liturgical prayers of the Church, especially in the invocations of the Holy Ghost found in the office of Whitsuntide and in the administration of the Sacrament of Confirmation, “_Tu septiformis munere: Digitus Paternae dexterae_”. “O Finger of God! O Spirit of Seven Forms”. In fine, we find our Irish saint applying to the Son of God the vision of the Prophet Ezechiel regarding the four mysterious animals: “O true Man! O Lion! O young Ox! O Eagle!” The prophecy is commonly interpreted of the Four Evangelists. Saint Augustine and Saint Jerome are quoted as authorities for this interpretation. But it is worthy of remark, that Saint Gregory the Great, whilst giving the same interpretation, applies the mysterious vision also to God the Son.(2) And Saint Aireran, by adopting this opinion, seems to afford us another proof of the great familiarity of our Irish scholars with the writings of the great Pontiff and Father of the Church. And this familiarity is rendered still more remarkable, and serves to give another proof of the constant communication between Rome and Ireland, from the close proximity of the times of our Saint and of Saint Gregory.] O Deus Pater omnipotens Deus exerce tuam misericordiam nobis! O God the Father Almighty! O God of Hosts, help us. O illustrious God! O Lord of the world! O Creator of all creatures, help us. O indescribable God! O Creator of all creatures, help us. O invisible God! O incorporeal God! O unseen God! O unimaginable God! O patient God! O uncorrupted God! O unchangeable God! O eternal God! O perfect God! O merciful God! O admirable God! O Golden Goodness! O Heavenly Father, who art in Heaven, help us.