וְקָרְא֥וּ לָהֶ֛ם עַם־הַקֹּ֖דֶשׁ גְּאוּלֵ֣י יְהוָ֑ה וְלָךְ֙ יִקָּרֵ֣א דְרוּשָׁ֔ה עִ֖יר לֹ֥א נֶעֱזָֽבָה׃ (ס)
And they shall call them The holy people, The redeemed of the LORD; And thou shalt be called Sought out, A city not forsaken.
Read kabbalistic (mystical) interpretation of Isaiah 62:12: and classical mystical sources.