John Gill Commentary Isaiah 21:14

"Unto him that was thirsty they brought water; the inhabitants of the land of Tema did meet the fugitives with their bread." — Isaiah 21:14 (ASV)

The inhabitants of the land of Tema
This country had its name from Tema, one of the sons of Ishmael, (Genesis 25:15). The Targum calls it the land of the south, as if it was Teman. These people were Arabians, and are here said to assist their countrymen, the Dedanites, in distress: brought water to him that was thirsty ;
as travellers are wont to be, especially in a desert land, and when fleeing from an enemy; in which circumstances the travelling companies of Dedanim now were: they prevented with their bread him that fled ;
gave it to him, being hungry and necessitous, without asking for it. Now all this seems to show what calamities should come upon the inhabitants of some parts of Arabia; that they should lodge in a forest, be hungry and thirsty, and flee before their enemy, as follows.