Charles Ellicott 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 ... Tema ... — Another element of suffering comes into the picture. The Dedanites, driven out of their usual route into the desert, find their provisions fail them, and the men of Tema, fearing to invite them to their tents in case they too might be struck by the invader, are compelled to take out bread and water stealthily. The name of Tema (now Taima), is found on the pilgrim route from Damascus to Mecca, and again on that between Palmyra and Petra, on the east of the Haurān mountains.

They prevented with their bread — i.e., they went out to welcome him (the fugitive), without waiting until he came as a suppliant. Their very hospitality, in strange contrast with Arab usage, had to be practised in secret.