Jeremiah 21:13

¹³ Behold, I am against thee, O inhabitant of the valley, and rock of the plain, saith the LORD; which say, Who shall come down against us? or who shall enter into our habitations?

Babel, Erech, Accad, and Calneh

Babel, Erech, Accad, and Calneh (Genesis 10:10), signify different kinds of worship, whose externals appear holy, whilst their internals are profane.