Our local Christian radio station ran an add about a year ago with much the same story. It was played out as a deadly disease that was killing everyone (sin) but the King had a cure and, although it was a very costly cure, He offered to pay it for everyone who would come and receive it. All they had to do was come through the door He designated. As in your story, there were those who complained loudly to anyone who would hear how "unfair" it was that the King who was providing the cure for the fatal disease wouldn't just let them enter His courts any old way they pleased.
There is only one road to heaven and God has been gracious enough to point it out clearly to us.
Peace.
There is only one road to heaven and God has been gracious enough to point it out clearly to us.
And pay the toll, and carry us across.
Shalom.