אַשְׁרֵ֣י הָ֭עָם יוֹדְעֵ֣י תְרוּעָ֑ה יְ֝הוָ֗ה בְּֽאוֹר־פָּנֶ֥יךָ יְהַלֵּכֽוּן׃
Happy is the people that know the joyful shout; They walk, O LORD, in the light of Thy countenance.
Read kabbalistic (mystical) interpretation of Psalms 89:16: and classical mystical sources.