Nuh was called as a Prophet to his people, sharing the universal message of Tawhid: believe in One True God (Allah), and follow the guidance He has given. He called upon his people to give up their idol-worship and embrace goodness. Nuh preached this message patiently and kindly for many, many years. As was true of so many of Allah's prophets, the people rejected Nuh's message and ridiculed him, see what happened next.