Not Sent as a Sign

They ask, “Why wasn’t an angel sent down to him?” But had We sent an angel, their fate would have been sealed, leaving them no chance to repent.

6:8They say: Why hath not an angel been sent down unto him? If We sent down an angel, then the matter would be judged; no further time would be allowed them (for reflection).

11:12A likely thing, that thou wouldst forsake aught of that which hath been revealed unto thee, and that thy breast should be straitened for it, because they say: Why hath not a treasure been sent down for him, or an angel come with him? Thou art but a warner, and Allah is in charge of all things.

15:7Why bringest thou not angels unto us, if thou art of the truthful?