בָּר֥וּךְ יְהוָ֑ה כִּ֥י הִפְלִ֘יא חַסְדּ֥וֹ לִ֝֗י בְּעִ֣יר מָצֽוֹר׃
Blessed be the LORD; For He hath shown me His wondrous lovingkindness in an entrenched city.
Read kabbalistic (mystical) interpretation of Psalms 31:22: and classical mystical sources.