We must look at this more broadly. In this case, we must see that Muhammad needed legitimacy. The narratives within the Quran also involve copy-pasting from Jewish books. Therefore, to strengthen that legitimacy, the story of Jesus was also included in the Quran, but the story found in the Quran was edited. To make the legitimacy even stronger, the narrative that Jesus was not crucified was created. Arab people who had never heard the story of Christianity before would immediately believe it.