verb
assert
uh-SERT/əˈsɜːrt/
To present or uphold something firmly as valid.
She asserts that the figures are correct and offers the original records.

Etymology
The Latin pieces combine “to” with “join together” in a verb meaning “lay claim to.” That notion of claiming underlies firmly declaring something to be true.
In context
you can't be put on trial or put to the test about your religious beliefs you simply assert them
More examples
- The workers asserted their right to fair treatment.
- He needs to assert himself during negotiations.
- The new manager is asserting her authority.
Forms
assert · asserts · asserted · asserting