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.

6:111Even if We sent down the angels to them, and the dead spoke to them, and We gathered all things before them, they still would not believe, unless God wills; but most of them are ignorant.