Serug from Guillaume Rouillé's Promptuarii Iconum Insigniorum
City of Ur
Spouse(s) Milcah
Children Nahor, and other sons and daughters
Parent(s) Reu and Ora

Serug (Hebrew: שְׂרוּג‎ – Śərūḡ, "branch"; Greek: ΣερούχSeroúkh) was the son of Reu and the father of Nahor, according to Genesis 11:20–23. He is also the great-grandfather of Abraham.

In the Masoretic text on which modern Bibles are based, he was 30 years old when Nahor was born, and he lived for another 200 years, making his age at death 230. However, the Septuagint (LXX) and Samaritan Pentateuch texts state that he was 130 on fathering Nahor; the Samaritan Pentateuch gives his age at death as 230, stating that he lived another 100 years, while the LXX has 200, making him 330 at his death.

Further details are provided in Jubilees, which gives the names of his mother, Ora (11:1), and wife, Milcah (11:6). It also states that his original name was Seroh, but that it was changed to Serug in the time when Noah's children began to fight wars, and the city of Ur Kesdim was built, where Serug lived. It says this Serug was the first of the patriarchal line to abandon monotheism and turn to idol worship, teaching sorcery to his son Nahor.

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