In the Bible, Seth was the third child of Adam and Eve.
Seth is mentioned about 8 times in the bible, mostly in Genesis. Seth was the son of Adam and Eve mentioned in Gen. 4:25-26, 5:3-8 and Luke 3:38.
Eve Genesis 4:25
Adam's youngest son was named Seth according to the Bible. Seth was born after the death of Abel, who was killed by his brother Cain. Seth is considered to be the ancestor of Noah and ultimately all of humanity, according to the Bible.
The Egyptian Seth's wife was named Nephthys.
Able had two brothers, Cain and Seth
Séat
The bible doesn't say - perhaps the authors hadn't thought of it - traditionally, the answer is he married one of his sisters.
According to the Bible, Adam and Eve had several children, including Cain, Abel, and Seth. Therefore, Seth was born after Adam and Eve.
Adam and Eve had sons and daughters (Genesis ch.5). Cain's wife (Genesis ch.4) must have been his own sister, for lack of choice (Rashi commentary, Leviticus 20:17); but his brother Seth, who was born later, most likely married one of his nieces (a daughter of Cain).
seth
Yes, Noah is traditionally considered a descendant of Seth according to the Bible. In the genealogy in the Book of Genesis, Noah is described as a descendant of Seth through his father Lamech.