וַיֵּ֨לֶךְ דָּוִ֧יד וְכָל־יִשְׂרָאֵ֛ל יְרוּשָׁלִַ֖ם הִ֣יא יְב֑וּס וְשָׁם֙ הַיְבוּסִ֔י יֹשְׁבֵ֖י הָאָֽרֶץ׃
And David and all Israel went to Jerusalem—the same is Jebus—and the Jebusites, the inhabitants of the land, were there.
Read kabbalistic (mystical) interpretation of I Chronicles 11:4: and classical mystical sources.