This is the 938th most frequent Hebrew word.
שהגיעו
"That/who/which arrived"
Describes past completion of arrival.
האורחים שהגיעו אתמול נשארו ללון אצלי.
The guests who arrived yesterday stayed overnight at my place.
Indicates the condition or event occurring leading to another.
שהגיעו המכתבים, כל העובדים התאספו לקרוא אותם.
Once the letters arrived, all the employees gathered to read them.
Refers to the subset who completed the action of arriving.