Psalms 146:3 Kabbalah

אַל־תִּבְטְח֥וּ בִנְדִיבִ֑ים בְּבֶן־אָדָ֓ם ׀ שֶׁ֤אֵֽין ל֥וֹ תְשׁוּעָֽה׃

Put not your trust in princes, Nor in the son of man, in whom there is no help.

Read kabbalistic (mystical) interpretation of Psalms 146:3: and classical mystical sources.