اَللَّاوِيِّينَ 23:6

وَفِي ٱلْيَوْمِ ٱلْخَامِسَ عَشَرَ مِنْ هَذَا ٱلشَّهْرِ عِيدُ ٱلْفَطِيرِ لِلرَّبِّ. سَبْعَةَ أَيَّامٍ تَأْكُلُونَ فَطِيرًا.

And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.