Why did Hashem need to make a flood to punish?

Difference between נח and אברהם?

One of the reasons for the flood is so נח will build the תיבה that it took 120 years to complete?

What do we see from the verse that calls the flood מי נח?

Why are some pains easier to take then others?

What does the Rebbe say about one who turns his face away from his father?