This worshipping on the rooftops suggests at least in part the idea of an individualized, domestic control of worship…. On the private housetop, each person could worship in a manner that pleased only himself.
1 The only other recorded instance of astral worship being performed upon rooftops is in Jeremiah 19:13. The context in Jeremiah 19:14 is that the people had “stiffened their neck (הקשו את־ערפם) and did not obey the Lord’s commands and thereby breached his covenant.
A modern equivalent of those who worship the host of heaven from their rooftops would be those who believe in the modern horoscope.
5 those who bow down on the roofs to the host of the heavens, those who bow down and swear to the LORD and yet swear by Milcom,