"And did those feet in ancient time" is a short poem by William Blake from the preface to his epic Milton: a Poem (1804). Today it is best known as the hymn "Jerusalem", with music written by C. Hubert H. Parry in 1916. This poem was written about the Industrial Revolution that took place duing the early 19th century.
The first verse asks did Christ visit Britain. This may be metaphorical or literal. There is an old English legend that Christ came to Britain as a boy.
The poet questions christianity in