And mention-O Messenger-when We said to you: "Indeed your Lord encompassed the people in knowledge and power." And We did not make the vision which We showed you with the eyes the night of the Isra and Mi'raj of the wonders of the creatures except a testing for the people; so that their disbeliever be distinguished from their believer, and We did not make the cursed tree of Zaqqum which was mentioned in the Qur'an except a trial for the people. And We frighten the polytheists with types of punishment and signs, but the frightening only increases them in persistence in the disbelief and the misguidance.