adjective
promissory
PRAH-mih-sor-ee/prˈɑmʌsˌɔri/
Containing or expressing a promise.
She signs a promissory note beside some coins and a calendar.

Etymology
The elements meaning 'beforehand' and 'send' combined in a verb that meant both 'send forth' and 'assure beforehand.' Promissory describes something containing that advance assurance, especially a commitment to pay or perform.
In context
Right? Cuz decree makes it sound like a legal thing. The word in Greek is actually a word for a promissory note. It's a note of debt. Right? And so Christ tears up the debt.
More examples
- The promissory note requires me to repay $500 next month.
- The agreement uses promissory language to commit both sides to repairs.
- His letter is promissory, offering financial support for the coming year.
Forms
promissory
promise noun — A statement committing to a future action.