Jesus says come, everything is now ready. And how we respond to that invitation demonstrates whether our personal religion is one of legalism or one of grace. Legalistic Christians are deaf or simply disobedient to the invitation of their Saviour. They want the kind of religion in which they are in control and one where they can choose the company they keep for themselves. Legalistic Christians are those who decide for themselves their own priorities.
Legalistic religion is one of conventions and convenience.
In the story the legalistic ones determined to set their own boundaries. Nothing was to upset their own priorities. The words they heard did not contain meaning to them. Their reasons for not coming became lame excuses. The issue was one of priority.