In Navajo, yatahey is widely used as a greeting because it is derived from the Hebrew language yaahey /yah-ah-teh/.In real life, it literally means “all is good.”.

https://www.indiancountryextension.org/what-does-yatahey-mean-in-navajo#:~:text=In%20Navajo%2C%20yatahey%20is%20widely%20used%20as%20a,real%20life%2C%20it%20literally%20means%20%E2%80%9Call%20is%20good.%E2%80%9D.