Miracle

[Luis Fok]

Specifically: An event or effect contrary to the
established constitution and course of things, or a deviation from the
known laws of nature; a supernatural event, or one transcending the
ordinary laws by which the universe is governed.

[Dorothey Allen]

an unusual and mysterious event that is thought to have been caused by a god because it does not follow the usual laws of nature:

[PussyCat]

A surprising and welcome event that is not explicable by natural or scientific laws and is therefore considered to be the work of a divine agency.