Is Yirmiyahu 7:4 the source for the idea that there won't be a 4th Temple? If not, what is?
ד אַל-תִּבְטְחוּ לָכֶם, אֶל-דִּבְרֵי הַשֶּׁקֶר לֵאמֹר: הֵיכַל יְהוָה הֵיכַל יְהוָה, הֵיכַל יְהוָה הֵמָּה.
4. Trust ye not in lying words, saying: 'The temple of the LORD, the temple of the LORD, the temple of the LORD, are these.'
Edit: Rashi says this refers to the shalosh regalim, what is his source for that?