I want to popularize the following or a similar belief.
In many thousand years people will travel back in time to give us an afterlife, if we make it possible, by going the steps, that will lead to a culture able to time travel and if we behave in a way, so that they will want to save us. They will not intervene in history in major ways, like revealing them selves, careful to avoid paradoxes and breaking the chain of events, that led to their ability to time travel
Some stories have something about them, that makes them believable beyond the usual suspension of disbelief, something that makes people live their lives by the wisdom they see in this stories. Psychologically, in terms of propaganda, from a story teller perspective, how can I make the description of this religion such a story?
Religious belief is one of the strongest and most stabile motivators for humans. It is largely independent of what evidence can be presented at the time. A religion, that bases its salvation story on technological advances and scientific discoveries yet to come, that is on the scientific method as a part of its path to personal salvation could promote such advances.
It could also provide a framework of thought, that could stay stable over the stretches of time it would likely take to actually develop time travel. This core properties should be preserved, or enhanced by the solutions proposed.
How can I make such a belief a more contagious idea for the reader?
An ideal answer would refer to one or more scientific studies investigating what elements of religious or ideological stories make them convincing and comment how the findings form that studies could be applied to the present narrative.