Peter. James. John.
The "Big Three".
Not merely for who they were but what they meant.
Peter. His name means "Rock". Not The Rock, as in Petra. That is God.
But a small stone.
James. His name is Jacob in the Hebrew.
In both cases, it means "Supplanter". Or "Replace".
John. His name means "Jehovah has Grace" in both Greek and Hebrew.
So there is a reason that when these three guys were together....
When they were called apart by Jesus from the other twelve....
It is always in the order of Peter, James, and John.
The Stone has been Replaced by Grace.
The Law has been superseded.
And these three men knew it more than anyone else! :)