After We had destroyed the earlier generations We bestowed the Book on Moses - a source of enlightenment for people and a guidance and mercy - that they may take heed.1
Footnotes
[1]
That is, “When the former generations met with the evil consequences of turning away from the teachings of the Prophets, and they met the doom that was experienced by Pharaoh and his hosts, then Moses was granted the Book so as to usher in a new era for mankind.”
[2]
A grammatical shift from 3rd person to 1st person.