Genesis 30:10-11

10Then Leah’s servant Zilpah bore Jacob a son. 11And Leah said, a“Good fortune has come!” so she called his name bGad.
 Gad sounds like the Hebrew for  good fortune

Joshua 13:24-28

24Moses gave an inheritance also to the tribe of Gad, to the people of Gad, according to their clans. 25 dTheir territory was Jazer, and all the cities of Gilead, and half the land of the Ammonites, to Aroer, which is east of eRabbah, 26and from Heshbon to Ramath-mizpeh and Betonim, and from fMahanaim to the territory of Debir,
Septuagint, Syriac, Vulgate; Hebrew Lidebir
27and in the valley Beth-haram, Beth-nimrah, hSuccoth, and Zaphon, the rest of the kingdom of Sihon king of Heshbon, having the Jordan as a boundary, to the lower end of the Sea of iChinnereth, eastward beyond the Jordan. 28This is the inheritance of the people of Gad according to their clans, with their cities and villages.

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