Psalms 107:12 Midrash

וַיַּכְנַ֣ע בֶּעָמָ֣ל לִבָּ֑ם כָּ֝שְׁל֗וּ וְאֵ֣ין עֹזֵֽר׃

Therefore He humbled their heart with travail, They stumbled, and there was none to help—

Read midrashic interpretation of Psalms 107:12: and classical rabbinic exegesis.