and that God might render pure of all dross those who have attained to faith, and bring to nought those who deny the truth.

Then, after this woe, He sent down upon you a sense of security, an inner calm which enfolded some of you,* whereas the others, who cared mainly for themselves, entertained wrong thoughts about God - thoughts of pagan ignorance - saying, "Did we, then, have any power of decision [in this matter]?"* Say: "Verily, all power of decision does rest with God"* - [but as for them,] they are trying to conceal within themselves that [weakness of faith] which they would not reveal unto thee, [O Prophet, by] saying, "If we had any power of decision, we would not have left so many dead behind."* Say [unto them]: "Even if you had remained in your homes, those [of you] whose death had been ordained would indeed have gone forth to the places where they were destined to lie down." And [all this befell you] so that God might put to a test all that you harbour in your bosoms, and render your innermost hearts* pure of all dross: for God is aware of what is in the hearts [of men].