הַ֥לְלוּ יָ֨הּ ׀ אוֹדֶ֣ה יְ֭הוָה בְּכָל־לֵבָ֑ב בְּס֖וֹד יְשָׁרִ֣ים וְעֵדָֽה׃
Hallelujah. I will give thanks unto the LORD with my whole heart, . In the council of the upright, and in the congregation.
Read kabbalistic (mystical) interpretation of Psalms 111:1: and classical mystical sources.