עַתָּ֤ה נִבְרְאוּ֙ וְלֹ֣א מֵאָ֔ז וְלִפְנֵי־י֖וֹם וְלֹ֣א שְׁמַעְתָּ֑ם פֶּן־תֹּאמַ֖ר הִנֵּ֥ה יְדַעְתִּֽין׃
They are created now, and not from of old, And before this day thou heardest them not; Lest thou shouldest say: ‘Behold, I knew them.’
Read Jewish philosophy on Isaiah 48:7: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.