Sheth was the third son of the Prophet Adam (pbuh). When Sheth was born, his father, the Prophet Adam (pbuh), had attained the age of 130 years.
Sheth was born five years after the death of Habil. Prophet Adam (pbuh) was very sad that Habil was dead. But Allah, in great mercy and kindness, gave Prophet Adam another beloved son. Allah told Prophet Adam (pbuh) that he would have a son and from the decedents of this son would come Prophet Muhammad. This made Prophet Adam very happy. Allah’s mercy was so great to Prophet Adam that Allah made Sheth look like his father. Prophet Adam loved Sheth very much. Prophet Adam taught Sheth the hours of the day and night and told Sheth of a flood that was to come.
When Prophet Adam (pbuh) was on death bed, he appointed Sheth (pbuh) as his successor and advised his descendants to follow him and live peacefully in perfect harmony.
Seth conveyed the message of Islam to the people, telling the people the correct belief in God and the way to perform acceptable worship. All the humans were Muslim at that time, but still God gave the Revelation to Seth, and he taught and reminded the people.
It is said that The Almighty revealed to him fifty small portions of the Scripture.
Seth received a new ruling from God, different from the time of Prophet Adam. This ruling was that it is forbidden for the brother to marry his sister, whether she is his twin sister, or his sister who is not his twin.
He tried to guide his followers on the right path, but some of them were strayed by the Satan. They began to worship Satan’s self-made portrait. Prophet Sheth (pbuh) passed away at the age of 912 years.