and when you said o musa! we cannot endure one kind of food. so invoke your lord for us to bring forth for us of what the earth grows its herbs its cucumber its fum its lentils and its onions. he said would you exchange that which is better for that which is lower go you down to any town and you shall find what you want! and they were covered with humiliation and misery and they drew on themselves the wrath of allah. that was because they used to disbelieve in the ayat of allah and killed the prophets wrongfully. that was because they disobeyed and used to transgress the bounds 
وإذ قلتم يا موسى لن نصبر على طعام واحد فادع لنا ربك يخرج لنا مما تنبت الأرض من بقلها وقثائها وفومها وعدسها وبصلها قال أتستبدلون الذي هو أدنى بالذي هو خير اهبطوا مصرا فإن لكم ما سألتم وضربت عليهم الذلة والمسكنة وباءوا بغضب من الله ذلك بأنهم كانوا يكفرون بآيات الله ويقتلون النبيين بغير الحق ذلك بما عصوا وكانوا يعتدون