That chastisement of the disbelievers is because God would never change a grace that He had conferred on a people substituting it with affliction until they have changed that which is in themselves until they have exchanged the grace conferred upon them for unbelief in the way that the Meccan disbelievers exchanged their being ‘fed against hunger’ their being made ‘safe from fear’ cf. Q. 1064 and the sending of the Prophet s to them for unbelief for barring against the way of God and for fighting Muslims; and know that God is Hearing Knowing.