Psalms 74:1 Kabbalah

מַשְׂכִּ֗יל לְאָ֫סָ֥ף לָמָ֣ה אֱ֭לֹהִים זָנַ֣חְתָּ לָנֶ֑צַח יֶעְשַׁ֥ן אַ֝פְּךָ֗ בְּצֹ֣אן מַרְעִיתֶֽךָ׃

Maschil of Asaph. Why, O God, hast Thou cast us off for ever? Why doth Thine anger smoke against the flock of Thy pasture?

Read kabbalistic (mystical) interpretation of Psalms 74:1: and classical mystical sources.