Al-Mukhtasar
إِنَّ فِى ذَٰلِكَ لَـَٔايَةً ۖ وَمَا كَانَ أَكْثَرُهُم مُّؤْمِنِينَ ﴿٦٧﴾
Indeed, in the parting of the sea for Moses, his salvation from Pharaoh and Pharaoh’s destruction, is a miracle proving the truthfulness of Moses. The majority of those with Pharaoh were not believers, they were rejecters.