And that which befel you on the day when the armies met, was certainly by the will of God, and that he might know the faithful, and that he might know the hypocrites! And when the word was "Advance, fight on the path of God, or drive back the foe," - they said, "Had we known how to fight, we would have followed you." Nearer were some of them on that day to unbelief, than to faith: