What was about to happen to them was closely related to the actions of the high priest every Pentecost, and it also fulfilled a prophecy uttered by the prophet Joel about 800 years prior to that day.
(‏ يوء ٢ :‏ ٢٨ -‏ ٣٢ ؛‏ اع ٢ :‏ ١٦ -‏ ٢١‏ )‏ فَمَا هِيَ هٰذِهِ ٱلْحَادِثَةُ ٱلْبَالِغَةُ ٱلْأَهَمِّيَّةِ ؟‏