en_tn_condensed/gen/23/17.md

Mamre

This was another name for the city of Hebron. It may have been named after Mamre, the friend of Abraham who lived there.

that is, the field, the cave that was in it, and all the trees

This phrase explains what the author meant when he wrote "the field of Ephron." It was not only the field, but also the cave and trees in the field.

passed

"became property that belonged"