“And We saved them and their people,” meaning: the Children of Israel, the twelve tribes, “from the great distress,” meaning: the great oppression.
﴿ونجيناهما وقومهما﴾ يُرِيد بني إِسْرَائِيل الاثْنَي عشر سبطاً ﴿من الكرب الْعَظِيم﴾ يُرِيد: الظُّلم الْعَظِيم