Well then you should probably look up more ancient celebrations that predate Christianity then.
The scene was reminiscent of the Feast of Dionysus. You know … the Blue guy that showed up at the end of the fashion/dance stuff and laid in front of the group in that same scene, that was Dionysus. And the scene is a recreation of the Dutch painting of that festival of the Gods.
Would not be the first time Christianity took a story from another religion and created a fake story to cover allowing people to use their same celebrations and histories. Just make it about the Christian God instead and it’s cool. Just like Jesus’s birthday actually being in the March/April/May timeframe and Christmas replacing things like Festivus, Yule, etc. celebrations.