In the Hebrew Bible, Jethro (/ˈdʒɛθroʊ/; Hebrew: יִתְרוֹ, Standard Yitro Tiberian Yiṯrô; "His Excellence/Posterity"; Arabic شعيب Shu-ayb) or Reuel was Moses' father-in-law, a Kenite shepherd and priest of Midian. In Exodus, Moses' father-in-law is initially referred to as "Reuel" (Exodus 2:18) but then as "Jethro" (Exodus 3:1). He was the father of Hobab in the Book of Numbers 10:29. He is also revered as the spiritual founder and chief prophet in his own right in the Druze religion, and considered an ancestor of all Druze.
Jethro is called a priest of Midian and became father-in-law of Moses after he gave his daughter, Zipporah, in marriage to Moses. He is introduced in Exodus 2:18.
Jethro is recorded as living in Midian, a territory stretching along the eastern edge of the Gulf of Aqaba in what is today northwestern Saudi Arabia. Some believe Midian is within the Sinai Peninsula. Biblical maps from antiquity show Midian on both locations.