The Feast of the Ascension of Jesus Christ, also called Ascension Day, Ascension Thursday, or sometimes Holy Thursday, commemorates the Christian belief of the bodily Ascension of Jesus into heaven. In Christian belief Ascension is on the 40th day after his Resurrection (Easter being reckoned as the first day), this year falling on Thursday 21st May. Jesus' final moments with his disciples focus on the commission that will shape their lives as apostles, as they spread the gospel beyond those who encountered Christ in the flesh to those who believe based on testimony. This culminates in St. Paul using the term "the body of Christ" to describe the Church.
There are many well known anthems composed for Ascension, Stanford's "Coelos ascended hodie" is another favourite of mine, and our choir have recorded Byrd's "Non von relinquam orphanos" remotely this week. See bottom of this post.)
Finzi's "God is Gone Up" Op. 27b was written in 1951, the same year in which he learned he was suffering from Hodgkin's Disease, from which he eventually died in 1956. The text is taken from a longer poem by Edward Taylor (c1642-1729) and is the second of his three opus 27 anthems. It was written in 1951 for a St Cecilia's Day Service at St Sepulchre's Church in Holborn. This anthem has rightly become an integral part of the choral repertoire, and is probably Finzi’s most well-known piece of sacred music.