3 Preface وَلَقَد فَتَنَّا الَّذينَ مِن قَبلِهِم ۖ فَلَيَعلَمَنَّ اللَّهُ الَّذينَ صَدَقوا وَلَيَعلَمَنَّ الكاذِبينَYusuf AliWe did test those before them, and God will certainly know1 those who are true from those who are false.The word “know” is used here more in the sense of testing than of acquiring knowledge. God is All-Knowing: He needs no test to increase His own knowledge, but the test is to burn out the dross within ourselves, as explained in the last note.