(They say) i.e. 'Abdullah Ibn Umayyah al-Makhzumi: (Why hath not an angel been sent down unto him?) to testify for what he is saying. (If We sent down an angel) as they are asking you, (then the matter would be judged) he would come down to punish them and take away their souls; it is also said that this means: if the angel comes down, he would destroy all of them; (no further time would be allowed them (for reflection)) they would not be allowed any delay.