Psalms 44:10 Kabbalah

אַף־זָ֭נַחְתָּ וַתַּכְלִימֵ֑נוּ וְלֹא־תֵ֝צֵ֗א בְּצִבְאוֹתֵֽינוּ׃

Yet Thou hast cast off, and brought us to confusion; and goest not forth with our hosts.

Read kabbalistic (mystical) interpretation of Psalms 44:10: and classical mystical sources.