יַכְּכָ֣ה יְהוָ֔ה בְּשִׁגָּע֖וֹן וּבְעִוָּר֑וֹן וּבְתִמְה֖וֹן לֵבָֽב׃
The LORD will smite thee with madness, and with blindness, and with astonishment of heart.
Read Jewish philosophical commentary on Deuteronomy 28:28: and classical philosophical sources.