The answer to the people of doubt emanates from the iman in...
The answer to the people of doubt emanates from the iman in one's heart - the heart has seen what is not and therefore dwells upon that which is. The knowledge of the Unseen -the next world and the day of reckoning - is with Allah. Only a warning can be given to those who deny. The aya explains to those who ask about time that Allah is beyond time. Time exists so that man may take notice, pause, and reflect on what is behind it. Warn them that to persist in questioning only increases doubt.
It will sink them deeper into the quicksand which they believe to be the solid ground upon which they rely. The system of kufr perpetuates the illusion of its own firmness. In reality it has no foundation; it follows its wahm (fancy, delusion), causing the seeker to seek in the wrong direction. His search leads him away from answers towards false hopes and despair. Man takes refuge in the bubble of kufr.
One strategic prick will burst it and cause both his own collapse and that of the system of kufr. When the next life comes, those who formerly were in denial will wear an expression of contrition upon their faces. They will be in a dreadful state, having come face to face with that which they denied. They are told that this is what you were promised - you will be what you have earned. They have earned this state through their actions, which are backed by their intentions.
In a tradition of the Ahl ul-Bayt, it is said that this aya refers to some of the companions of the Prophet, salla-llahu `alayhi wa alihi wa sallam, who, upon seeing that 'Ali, `alayhis-salam, was so close to the Prophet, were exceedingly jealous. 28 Say: Have you considered if Allah should destroy me and those with me - rather He will have mercy on us; yet who will protect the unbelievers from a painful punishment? Reality will cause everyone to perish.
One must see that Allah's mercy and protection fall over everyone, whether mu'min or kafir. "Who will protect the unbelievers?" Yujiru is from ajara , which means to protector to aid someone. Jar means neighbor; the word implies mercy and compassion. The rahma of Allah covers even he who denies at the moment of his denial. But whatever has a beginning has an end. A father's love for his son continues until he dies. The father has a contract with his son to be patient with him in every situation.
But after the father dies, an uncle may take his place and treat the son roughly and impatiently.