Formal/Historical:
* The king issued an edict forbidding the construction of new temples.
* The Roman emperor's edict declared Christianity a legal religion.
* The city council's edict mandated the removal of all parking meters.
Informal/Modern:
* My boss issued an edict that all employees must work from home on Fridays.
* The school board's edict banned the use of cell phones during class.
* My grandmother's edict was that everyone must eat their vegetables.
Literary:
* The tyrant's edict struck fear into the hearts of his subjects.
* The wizard's edict brought peace to the land, but at a terrible cost.
Remember: An "edict" is a formal order or decree. It usually implies authority and power.