Moses PBUH had fled Egypt many years ago, as he had killed an Egyptian man, and he heard that Pharoah had sent people to kill him for his crime. So, when Allah told him to go to Pharoah to admonish him, he remembered that crime.
(“My Lord! I have killed a man among them, and I fear that they will kill me”) (Al-Qassas 28:33)
كان موسى عليه السلام قد هرب من مصر منذ سنين بعد أن قتل رجلا مصريا وعلم أن فرعون أرسل جنوده ليقتلوه. فعندما أمره الله تعالى أن يذهب إلى فرعون قال أنه قتل شخصا.
(قَالَ رَبِّ إِنِّي قَتَلْتُ مِنْهُمْ نَفْسًا فَأَخَافُ أَن يَقْتُلُون)
القصص 28: 33