הֵ֧ן כֻּלְּכֶ֛ם קֹ֥דְחֵי אֵ֖שׁ מְאַזְּרֵ֣י זִיק֑וֹת לְכ֣וּ ׀ בְּא֣וּר אֶשְׁכֶ֗ם וּבְזִיקוֹת֙ בִּֽעַרְתֶּ֔ם מִיָּדִי֙ הָיְתָה־זֹּ֣את לָכֶ֔ם לְמַעֲצֵבָ֖ה תִּשְׁכָּבֽוּן׃ (פ)
Behold, all ye that kindle a fire, That gird yourselves with firebrands, Begone in the flame of your fire, And among the brands that ye have kindled. This shall ye have of My hand; Ye shall lie down in sorrow.
Read Jewish philosophy on Isaiah 50:11: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.