verb
presuppose
pree-suh-POHZ/ˌpriːsəˈpəʊz/
To assume something is true or necessary in advance.
Reaching into her pocket presupposes that the keys are still there.

Etymology
Adding “before” to “assume” makes the assumption a starting point: something taken for granted in advance of knowledge or experience, on which later reasoning or action depends.
In context
a muslim and a christian are not going to debate does god exist because they both presuppose god right they both believe he exists
More examples
- This plan presupposes access to reliable transportation.
- We cannot presuppose that every student owns a laptop.
- By presupposing his guilt, they overlooked evidence of his innocence.
Forms
presuppose · presupposes · presupposed · presupposing
presupposition noun — An assumption made before further reasoning.