I Chronicles 11:8 Kabbalah

וַיִּ֤בֶן הָעִיר֙ מִסָּבִ֔יב מִן־הַמִּלּ֖וֹא וְעַד־הַסָּבִ֑יב וְיוֹאָ֕ב יְחַיֶּ֖ה אֶת־שְׁאָ֥ר הָעִֽיר׃

And he built the city round about, from Millo even round about; and Joab repaired the rest of the city.

Read kabbalistic (mystical) interpretation of I Chronicles 11:8: and classical mystical sources.