Gittites

Concise Bible Dictionary:

Designation of the six hundred men as inhabitants of Gath, and of their leader Ittai, who followed David at Absalom’s revolt (2 Sam. 15:18-2218And all his servants passed on beside him; and all the Cherethites, and all the Pelethites, and all the Gittites, six hundred men which came after him from Gath, passed on before the king. 19Then said the king to Ittai the Gittite, Wherefore goest thou also with us? return to thy place, and abide with the king: for thou art a stranger, and also an exile. 20Whereas thou camest but yesterday, should I this day make thee go up and down with us? seeing I go whither I may, return thou, and take back thy brethren: mercy and truth be with thee. 21And Ittai answered the king, and said, As the Lord liveth, and as my lord the king liveth, surely in what place my lord the king shall be, whether in death or life, even there also will thy servant be. 22And David said to Ittai, Go and pass over. And Ittai the Gittite passed over, and all his men, and all the little ones that were with him. (2 Samuel 15:18‑22); 2 Sam. 18:22And David sent forth a third part of the people under the hand of Joab, and a third part under the hand of Abishai the son of Zeruiah, Joab's brother, and a third part under the hand of Ittai the Gittite. And the king said unto the people, I will surely go forth with you myself also. (2 Samuel 18:2)). Goliath also was a Gittite (2 Sam. 21:1919And there was again a battle in Gob with the Philistines, where Elhanan the son of Jaare-oregim, a Bethlehemite, slew the brother of Goliath the Gittite, the staff of whose spear was like a weaver's beam. (2 Samuel 21:19); 1 Chron. 20:55And there was war again with the Philistines; and Elhanan the son of Jair slew Lahmi the brother of Goliath the Gittite, whose spear staff was like a weaver's beam. (1 Chronicles 20:5)). Obed-edom, though a Levite, was also called a Gittite, probably because of residing at Gath or Gath-rimmon (2 Sam. 6:10-1110So David would not remove the ark of the Lord unto him into the city of David: but David carried it aside into the house of Obed-edom the Gittite. 11And the ark of the Lord continued in the house of Obed-edom the Gittite three months: and the Lord blessed Obed-edom, and all his household. (2 Samuel 6:10‑11); 1 Chron. 13:1313So David brought not the ark home to himself to the city of David, but carried it aside into the house of Obed-edom the Gittite. (1 Chronicles 13:13)).

Jackson’s Dictionary of Scripture Proper Names:

gentilic of Gath