Gad was a seer or prophet in the Hebrew Bible. He was one of the personal prophets of King David of Israel and some of his writings are believed to be included in the Books of Samuel. He is first mentioned in telling David to return to the land of Judah.
The most important Biblical reference to Gad is:11-13, where after David confesses his sin of taking a census of the people of Israel and Judah, God sends Gad to David to offer him his choice of three forms of punishment.He settled east of the Jordan. Gad is mentioned a last time in , coming to David and telling him to build an altar to God after He stops the plague that David chose.