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

God's object also is to purge those that are true in Faith and to deprive of blessing Those that resist Faith.

And that Allah may prove those who believe, and may blight the disbelievers.

And that He may purge those who believe and deprive the disbelievers of blessings.

And that Allah may purify the believers [through trials] and destroy the disbelievers.