Believers! If you follow those who deny the Truth, they will drive you back on your heels, and you will turn about, losers. 149 God is your Guardian and the best Helper. 150 We shall cast terror into the hearts of those who disbelieve, because they joined others in worship with Allah, for which He had sent no authority; their abode will be the Fire and how evil is the abode of the Zalimun (polytheists and wrong-doers). 151 AND, INDEED, God made good His promise unto you when, by His leave, you were about to destroy your foes - until the moment when you lost heart and acted contrary to the [Prophet's] command, and disobeyed after He had brought you within view of that [victory] for which you were longing. There were among you such as cared for this world [alone,] just as there were among you such as cared for the life to come: whereupon, in order that He might put you to a test, He prevented you from defeating your foes. But now He has effaced your sin: for God is limitless in His bounty unto the believers. 152 ۞ (Believers remember) when you were fleeing without even glancing to either side even though the Messengers were calling you back, God made you suffer sorrow upon sorrow to make you forget your grief of what you had lost and the injuries you had suffered. God is Well-Aware of what you do. 153 Then, after sorrow He sent down peace [of mind] upon you in the shape of drowsiness that overcame some of you, but there were others who were anxious only about themselves. They entertained false notions about God, like the notions of the days of ignorance. "Have we any say in the matter?" they asked. Say to them, "All is in the hands of God." They conceal in their hearts what they would not reveal to you. They say, "Had we had any say in the matter, none of us would have been killed here." Say to them, "Had you stayed in your homes, those whose death had been decreed would nevertheless have gone forth to the places where they were destined to die." And all this befell you so that God might test what is in your minds. And in order to purify what was in your hearts. For God is aware of your innermost thoughts. 154 Those of you who turned back on the day the two hosts Met,-it was Satan who caused them to fail, because of some (evil) they had done. But Allah Has blotted out (their fault): For Allah is Oft-Forgiving, Most Forbearing. 155