اَلْخُرُوجُ 31:16

فَيَحْفَظُ بَنُو إِسْرَائِيلَ ٱلسَّبْتَ لِيَصْنَعُوا ٱلسَّبْتَ فِي أَجْيَالِهِمْ عَهْدًا أَبَدِيًّا.

Wherefore the children of Israel shall keep the sabbath, to observe the sabbath throughout their generations, for a perpetual covenant.