Say: "O men, I am verily the apostle of God to you all. His whose kingdom extends over the heavens and the earth. There is no god but He, the giver of life and death. So believe in God and the messenger, the gentile Prophet, sent by Him, who believes in God and His messages. Obey him; you may haply be guided aright." 158 And of Musa's people was a party who guided (people) with the truth, and thereby did they do justice. 159 And We divided them into twelve tribes, as nations; and We revealed to Musa when his people asked him for water: Strike the rock with your staff, so outnowed from it twelve springs; each tribe knew its drinking place; and We made the clouds to give shade over them and We sent to them manna and quails: Eat of the good things We have given you. And they did not do Us any harm, but they did injustice to their own souls. 160 And remember it was said to them: "Dwell in this town and eat therein as ye wish, but say the word of humility and enter the gate in a posture of humility: We shall forgive you your faults; We shall increase (the portion of) those who do good." 161 The wicked among them changed and perverted the word We had spoken to a word unpronounced; so We sent from heaven retribution on them for all their wickedness. 162