לְמַעֲנִ֧י לְמַעֲנִ֛י אֶעֱשֶׂ֖ה כִּ֣י אֵ֣יךְ יֵחָ֑ל וּכְבוֹדִ֖י לְאַחֵ֥ר לֹֽא־אֶתֵּֽן׃ (ס)
For Mine own sake, for Mine own sake, will I do it; For how should it be profaned? And My glory will I not give to another.
Read Jewish philosophy on Isaiah 48:11: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.