What do returning lost property, a desert tent, and the Arabic greeting—adopted by many Hebrew speakers—Ahlan wa sahlan (“welcome”) have in common? 

They all have a connection to the Semitic root: א-ה-ל (A-H-L).

While Hebrew kept Ohel (אֹהֶל) as the physical tent, Arabic came to use ahl (أَهْل) to mean the family living inside........

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