וְאֶת־חֶשְׁבּוֹן֙ וְאֶת־מִגְרָשֶׁ֔יהָ וְאֶת־יַעְזֵ֖יר וְאֶת־מִגְרָשֶֽׁיהָ׃ (ס)
and Heshbon with the open land about it, and Jazer with the open land about it.
Read kabbalistic (mystical) interpretation of I Chronicles 6:66: and classical mystical sources.