Genesis 49:19

Gad. This poetic passage, in which the words translated “troop” and “overcome,” from the same root, occur, might better be rendered, “An attacking force shall attack him, but he shall attack the heel.” The language seems to refer to attacks that the tribe of Gad would have to endure with patience, but that they would successfully repel. Although the known history of the 12 tribes does not provide a specific fulfillment of this prophecy, the account given in 1 Chron. 5:18-22 shows that the Gadites displayed, wherever it was needed, the bravery promised them by their father. The Gadites who came to David are described as lions, and their swiftness is compared to that of the gazelle (1 Chron. 12:8-15), which comparisons prove that they were a valiant tribe.