 For this reason, Kintu's worthiness was tested by Nambi's father Ggulu through a series of trials over the course of four days.From this point, this version of the oral tradition differs from others in that Ggulu instructed Nambi to take one female and one male of each living thing in order to begin life on Earth.Ggulu also warned her not to forget anything while packing because she would never be able to return to the sky in fear that her mischievous brother Walumbe would follow them to Earth and bring hardships upon them.