וַיֹּ֣אמֶר חַגַּ֔י אִם־יִגַּ֧ע טְמֵא־נֶ֛פֶשׁ בְּכָל־אֵ֖לֶּה הֲיִטְמָ֑א וַיַּעֲנ֧וּ הַכֹּהֲנִ֛ים וַיֹּאמְר֖וּ יִטְמָֽא׃
Then said Haggai: ‘If one that is unclean by a dead body touch any of these, shall it be unclean?’ And the priests answered and said: ‘It shall be unclean.’
Read Jewish philosophy on Haggai 2:13: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.