How did this come about? When God destroyed Egypt’s firstborn, he sanctified Israel’s firstborn, setting them apart as his, as belonging to him.
بَعْدَمَا أَهْلَكَ يَهْوَهُ أَبْكَارَ ٱلْمِصْرِيِّينَ ،‏ قَدَّسَ أَبْكَارَ ٱلْإِسْرَائِيلِيِّينَ ،‏ أَيْ فَرَزَهُمْ لِيَكُونُوا لَهُ .‏