Serug is one of the patriarchs of the genealogical line running from Shem to Abraham, and is venerated in the Orthodox Church among the Holy Forefathers, the ancestors of Christ according to the flesh. The scriptural record of his life is confined to genealogy: in Genesis 11 he is named as the son of Reu and the father of Nahor, and so the grandfather of Terah and the great-grandfather of Abraham. His name appears as Serug in the Hebrew text and as Seruch (Greek Serouch) in the Septuagint; it is in this latter form that he is listed among the ancestors of Jesus in the genealogy of Luke 3:35.
According to Genesis 11:20-23, Serug was born when his father Reu was thirty-two years old, and Serug himself was thirty when his son Nahor was born; after the birth of Nahor he is said to have lived a further two hundred years and to have had other sons and daughters. The ages given for the patriarchs of this period differ between the textual traditions, the Septuagint and Samaritan Pentateuch recording figures different from those of the Masoretic Hebrew, so the precise lifespan is not fixed across the manuscripts. Beyond these genealogical notices Scripture relates nothing of his deeds.
The Orthodox Church commemorates the Holy Forefathers collectively on the Sunday that falls between December 11 and 17, the Sunday of the Holy Forefathers before the Nativity of Christ, honoring the righteous of the Old Testament who lived before and under the Law in expectation of the coming Messiah. Serug, belonging to the patriarchal line of Shem that issued in Abraham, is numbered among them, and is also commemorated on December 14.