Churches are traditionally a symbol of religion, holiness and divinity in literature. However, Blake juxtaposes this symbolism with the imagery ‘blackning Church’ which suggests impurity and corruption. This is significant as, in Blake’s eyes; the church has failed in its duty to protect the orphans in its care that were picked out to become chimney sweepers. Consequently, the blood of such children is on the church’s hands, so to speak, and this appals Blake.