6:35If you find their rejection hard to bear, then if you can, seek a tunnel into the earth, or a stairway into the heaven, and bring them a sign. Had God willed, He could have gathered them to guidance. So do not be of the ignorant.

6:65Say, “He is Able to send upon you an affliction, from above you, or from under your feet. Or He can divide you into factions, and make you taste the violence of one another. Note how We explain the revelations, so that they may understand.”