Passover celebrates the freeing of the Jews from slavery; Shavuot celebrates their becoming God’s holy people by the gift and acceptance of the Law; and the counting of the days to Shavuot symbolises their yearning for the Law.

  From a strictly practical point of view, Shavuot was a very good time for the Holy Spirit to come down and inspire the Apostles to preach to all nations because, being a pilgrimage festival, it was an occasion when Jerusalem was filled with pilgrims from many countries.

  Symbolically, the parallel with the Jews is exact. We are freed from the slavery of death and sin by Easter; with the Apostles, we spend some time as toddlers under the tutelage of the risen Jesus; and when he has left, the Spirit comes down on us and we become a Church.

  He was renowned for his learning and sanctity. He wrote both prose and verse, and set his verse to music. Finding the people of his time somewhat dilatory in their church attendance, it is said that he would stand up in public places, singing songs and preaching sermons to attract people to the faith. His Old English verse, sung with harp accompaniment, has not survived, so we can judge this Anglo-Saxon writer only by his Latin works. It is thought that he invented the crossword puzzle. He died at Doulting near Wells in Somerset, and was buried at Malmesbury. His cult was discontinued by Lanfranc, but Osmund authorised its resumption with the translation of his relics in 1078.

  Whenever we take up a Bible we touch Irenaeus’s work, for he played a decisive role in fixing the canon of the New Testament. It is easy for people nowadays to think of Scripture – and the New Testament in particular – as the basis of the Church, but harder to remember that it was the Church itself that had to agree, early on, about what was scriptural and what was not. Before Irenaeus, there was vague general agreement on what scripture was, but a system based on this kind of common consent was too weak. As dissensions and heresies arose, reference to scripture was the obvious way of trying to settle what the truth really was, but in the absence of an agreed canon of scripture it was all too easy to attack one’s opponent’s arguments by saying that his texts were corrupt or unscriptural; and easy, too, to do a little fine-tuning of texts on one’s own behalf. Irenaeus not only established a canon which is almost identical to our present one, but also gave reasoned arguments for each inclusion and exclusion.

  Irenaeus also wrote a major work, Against the Heresies, which in the course of denying what the Christian faith is not, effectively asserts what it is. The majority of this work was lost for many centuries and only rediscovered in a monastery on Mount Athos in 1842. Many passages from it are used in the Office of Readings.