כְּמ֤וֹ חֵ֣לֶב וָ֭דֶשֶׁן תִּשְׂבַּ֣ע נַפְשִׁ֑י וְשִׂפְתֵ֥י רְ֝נָנ֗וֹת יְהַלֶּל־פִּֽי׃
My soul is satisfied as with marrow and fatness; And my mouth doth praise Thee with joyful lips;
Read kabbalistic (mystical) interpretation of Psalms 63:6: and classical mystical sources.