Psalms 148:12 Kabbalah

בַּחוּרִ֥ים וְגַם־בְּתוּל֑וֹת זְ֝קֵנִ֗ים עִם־נְעָרִֽים׃

Both young men and maidens, Old men and children;

Read kabbalistic (mystical) interpretation of Psalms 148:12: and classical mystical sources.