en_tn/2ki/10/01.md

seventy descendants

"70 descendants" (See: rc://en/ta/man/translate/translate-numbers)

Jehu wrote letters and sent them to Samaria

This means that Jehu sent a messenger to deliver the letters. AT: "Jehu wrote letters and sent a messenger to deliver them in Samaria" (See: rc://en/ta/man/translate/figs-metonymy)