Translation:

36. It was revealed to Noah: "None of thy people will believe except those who have believed already! So grieve no longer over their (evil) deeds.

Notes (Tafseer)

1529. The story of Noah is resumed. A point was reached, when it was clear that there was no hope of saving the sinners, who were courting their own destruction. It was to be a great Flood. So Noah was ordered to construct a great Ark or Ship, a heavy vessel to remain afloat in the Flood, so that the righteous could be saved in it.