Likely a poem put together by an editor, these lines were mostly written by Blake, and credited to Blake, in a notebook he kept by his side. This poem along with other rough ideas was compiled into a publication in 1863 by Dante Gabriel Rossetti which was part of Alexander Gilchrist’s volume of work...
Silent Silent Night
Quench the holy light
Of thy torches bright
For possess'd of Day
Thousand spirits stray
That sweet joys betray
Why should joys be sweet
Used with deceit
Nor with sorrows meet
But an honest joy
Does itself destroy
For a harlot coy
Silent, Silent Night was written by William Blake.