Believers in a higher power
I was a nobody. A nothing. A corporate slave traveling between the dimensions to sustain my bosses' greed. But like you all, I took a glimpse into the divine realm as I was a normal man. Like you all, I saw the gods and their call. Like you all, I answered it. Like you all, I shall serve them with my life until we get to reunite!
There is no better word to describe them. Are they gods, or something beyond that? No precise description exists of them, as those who encountered them were already in a state of half-consciousness. They all agree however that there was something out there, calling for them. Not them in particular, but for anything that would hear their pleas in the cold either. They may be benevolent or aim for the destruction of the known universe, or simply not care at all.
The organization formed around people who were sick of not being listened to. The seven founders declared themselves leaders and enacted the few rules of the sect. Many joined them, and before long the Cosmic Sect was one of the greatest religious power across the Dominium. Although they still have fewer believers than the dying Christianity, every single one is a fanatic whose beliefs are anchored as fact in their mind.
Regularly, the most fervent followers are granted the ultimate boon, a one-way trip to their gods. Through a gate, the sect has purchased and linked to himself, they enter the ether, never to return. They do so in the hope they will meet the gods and ascend to godhood as servants of the cosmic beings.
As much as they wanted to call their group the Cosmic Church, the suggestion was rejected by the registration institution. The religious and beliefs-based organizations must obey some criteria in what they call themselves. Churches must, among other things celebrate one or multiple well-defined god(s), with a known endeavor and a book of divine commands.
Since they can't define their gods nor have any divine book, the group was denied churchdom and categorized as a sect - they venerate obscure gods with no set agenda in non-conventional ways.