Disillusioned with God and the modern world, an immortal man suffering from an existential crisis attempts to immanentize the eschaton- bring heaven on Earth. He resorts to murder and underhandedness as means to justify his end. Title: Aeturnum

Agreed with Kbfilmworks and DPG.

In addition, the use of generic description and lack of detail make it hard to picture what the story will look like and how the plot will play out. The reason is that the logline doesn’t describe in detail the necessary story elements making it? un clear (in specific terms) what kind of person the main character is, what starts him off on his journey and what his goal is.

Here is a helpful guide which outlines the vital components necessary for constructing loglines:
https://loglines.org/howto/