Albert Barnes Commentary Jeremiah 11:13

"For according to the number of thy cities are thy gods, O Judah; and according to the number of the streets of Jerusalem have ye set up altars to the shameful thing, even altars to burn incense unto Baal." — Jeremiah 11:13 (ASV)

That shameful thing - that is, Baal; public establishment of idolatry, such as actually took place in the reign of Manasseh (2 Chronicles 33:3. Contrast 2 Kings 18:4).