The word "it" refers to the night of Job's birth or conception. The human ability to rejoice or not rejoice is applied to that night. AT: "May that night vanish from the calendar." (See: [[rc://en/ta/man/translate/figs-personification]]).
## let it not come into the number ##
AT: "may no one count it in the number"
## let that night be barren ##
AT: "may that night be childless" or "I wish that night had never seen my birth"
## let no joyful voice come into it ##
AT: "let no one hear the happy cry at the birth of a son"