Psalms 108:2 Kabbalah

נָכ֣וֹן לִבִּ֣י אֱלֹהִ֑ים אָשִׁ֥ירָה וַ֝אֲזַמְּרָ֗ה אַף־כְּבוֹדִֽי׃

My heart is steadfast, O God; I will sing, yea, I will sing praises, even with my glory.

Read kabbalistic (mystical) interpretation of Psalms 108:2: and classical mystical sources.