וְהִרְעַשְׁתִּי֙ אֶת־כָּל־הַגּוֹיִ֔ם וּבָ֖אוּ חֶמְדַּ֣ת כָּל־הַגּוֹיִ֑ם וּמִלֵּאתִ֞י אֶת־הַבַּ֤יִת הַזֶּה֙ כָּב֔וֹד אָמַ֖ר יְהוָ֥ה צְבָאֽוֹת׃
and I will shake all nations, and the choicest things of all nations shall come, and I will fill this house with glory, saith the LORD of hosts.
Read kabbalistic (mystical) interpretation of Haggai 2:7: and classical mystical sources.