15وَلَقَد كانوا عاهَدُوا اللَّهَ مِن قَبلُ لا يُوَلّونَ الأَدبارَ ۚ وَكانَ عَهدُ اللَّهِ مَسئولًاTalal ItaniAlthough they had made a pledged to God, in the past, that they will not turn their backs. A pledge to God is a responsibility.