Gittites — Or rather strangers, as Ittai their head is called, 2 Samuel 15:19, and they are called his brethren, 2 Samuel 15:20. Probably they were Philistines by birth, born in the city or territory of Gath, as the following words imply, who by David's counsel, and example, were won to embrace the true religion, and had given good proof of their military skill, and valour, and fidelity to the king.
Related Commentaries of 2 Samuel 15:18
2 Samuel 15:18
18 And 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.