And, verily, We know those who passed on before you, and We know those who will come after you. (And We know those who advance in goodness and those who lag behind)
And indeed, We know the first generation of you who have past away, and indeed, We know the present generation of you and also those who will come later
And indeed, We know the first generations of you who had passed away, and indeed, We know the present generations of you (mankind), and also those who will come afterwards