Numbers 1:24

The generations of the sons of Gad were numbered by their families and their fathers' houses, every male of twenty years old and over who was able to go to war;

Numbers 26:15-18

The sons of Gad by their families: of Zephon, the family of the Zephonites: of Haggi, the family of the Haggites: of Shuni, the family of the Shunites:

Genesis 30:10-11

And Zilpah, Leah's servant, gave birth to a son.

Genesis 46:16

And the sons of Gad: Ziphion and Haggi, Shuni and Ezbon, Eri and Arodi and Areli;

Genesis 49:19

Gad, an army will come against him, but he will come down on them in their flight.

Numbers 2:14-15

Then the tribe of Gad, with Eliasaph, son of Reuel, as their chief.

Treasury of Scripture Knowledge

Summary

Of the children of Gad, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;

The tribe of gad marched, along with that of simeon, under the standard of reuben; and it seems, on that account, to have been introduced in this order

General references

Bible References

The tribe of gad marched, along with that of simeon, under the standard of reuben; and it seems, on that account, to have been introduced in this order

Numbers 2:14
Then the tribe of Gad, with Eliasaph, son of Reuel, as their chief.
Numbers 26:15
The sons of Gad by their families: of Zephon, the family of the Zephonites: of Haggi, the family of the Haggites: of Shuni, the family of the Shunites:
Genesis 30:10
And Zilpah, Leah's servant, gave birth to a son.
Genesis 46:16
And the sons of Gad: Ziphion and Haggi, Shuni and Ezbon, Eri and Arodi and Areli;
Genesis 49:19
Gad, an army will come against him, but he will come down on them in their flight.

General references

Numbers 26:18
These are the families of the sons of Gad as they were numbered, forty thousand, five hundred.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain