The gathering, scheduled to take place in downtown Boston on April 28-30, is being toted as “Hexennacht in Boston,” a German phrase that means “Witches Night in Boston.”
https://www.christianpost.com/news/christians-prepare-for-satancon-a-harvest-of-lost-souls.html
The event is being held intentionally in Bean Town in response to Boston Mayor Michelle Wu not allowing satanic invocations at city events. The temple sued the city for denying its request in July 2021 to raise its flag at Boston City Hall in honor of Satan Appreciation Week.
One of the sins that characterize the end times is the worship of demons.
Revelation 9:20
The rest of mankind, who were not killed by these plagues, did not repent of the works of their hands, so as not to worship demons, and the idols of gold and of silver and of brass and of stone and of wood, which can neither see nor hear nor walk;

John 3:16
βFor God so loved the world, that He gave His only begotten Son, that whoever believes in Him shall not perish, but have eternal life.