1 Chronicles 5:10

During Saul's reign they waged war against the Hagrites, who were defeated at their hands; they occupied the dwellings of the Hagrites throughout the entire region east of Gilead.

Genesis 21:9

Sarah saw that the son whom Hagar the Egyptian had borne to Abraham was laughing in mockery.

Genesis 25:12

This is the genealogy of Ishmael, Abraham's son, whom Hagar the Egyptian, Sarah's maid, bore to Abraham.

1 Chronicles 5:18-21

The Reubenites, the Gadites and the half-tribe of Manasseh had forty-four thousand seven hundred and sixty men ready for military service, able-bodied men who could handle shield and sword, who could use a bow, and who were trained for battle.

Psalm 83:6

The tents of Edom and the Ishmaelites; Moab, and the Hagrites;

Treasury of Scripture Knowledge

Summary

And in the days of Saul they made war with the Hagarites, who fell by their hand: and they dwelt in their tents throughout all the east land of Gilead.

Bible References

The hagarites

1 Chronicles 5:19
They waged war against the Hagrites, Jetur, Naphish and Nodab.
Genesis 21:9
Sarah saw that the son whom Hagar the Egyptian had borne to Abraham was laughing in mockery.
Genesis 25:12
This is the genealogy of Ishmael, Abraham's son, whom Hagar the Egyptian, Sarah's maid, bore to Abraham.
Psalm 83:6
The tents of Edom and the Ishmaelites; Moab, and the Hagrites;