What is God's greatest miracle?
That, in the 21st century, people continue to believe in Him despite the absence of even a single piece of concrete evidence of His existence. That, in the 21st century, people continue this belief despite overwhelming scientific evidence showing His inspired word to be fatally flawed. That, in the 21st century, people are able to suspend logic and rationality in order to continue their belief in this fatally-flawed story. He must get a good chuckle to see just how gullible we can be as a species.
If ever, God's greatest miracle would be about a selfish unbeliever turned himself into a believer of God.
"In the same way, I tell you, there is rejoicing in the presence of the angels of God over one sinner who repents."
What is God greatest miracle?
I would suggest that it is the fact that more than half the worlds population still believes in a god, regardless of what flavour of god that happens to be, despite the overwhelming lack of any evidence whatsoever that such an entity exists or existed is a miracle.
It's also a (frightening) miracle that the indoctrination of children can be so powerful.
I guess many people will have their own opinions on this matter and we know well and good that the very miracle of creation itself is high up on the list but in my personal opinion I would have to say that God's greatest miracle was when He fulfilling prophecy took on the form of man Himself and came to be born of a virgin, walked among men, was crucified on a cross and rose again from the dead for the burden of our sins. In the book of Isaiah it says that God looked and saw that there was no salvation for man so He stretched out His own right hand and provided salvation unto man. I know that allot of people would argue that Jesus was merely the son of God and not God Himself in the flesh but if you read the prophecy of Isaiah 9:6 it says that unto us a child is born, unto us a son is given and He shall Wonderful, Counselor, The mighty God, The everlasting Father, The Prince of Peace.
So that pretty well sums up to me what I consider God's greatest miracle.
Not exactly a miracle but an inditement of our civilizations.
The fact that so many people believe in the myth and superstition connected to all the major religions of the world (and the not so major too).