Possible Clues:

• Sounds completely powerless for the Christians
• Days before Easter
• Seven days leading up to Easter
• Utterly unconvincing in speech days before Easter
• Variable spring period
• Said to be completely exhausted in the days before Easter
• Sounding completely muted, this period is actually very sacred
• Religious occasion when one is rumoured to become entirely debilitated
• Palm Sunday plus the following six days
• Entirely without power, it's announced, for several days in spring