The third excuse puts home and family ahead of God. God never meant for our home and relationships to be used selfishly. We serve God best when we invite him into our work and homes and when we share our possessions with others. The second part of the story focuses on those who had no claim on the king and who would never have considered getting such an invitation. But this invitation also contains a warning for those who refuse it or who approach the wedding feast unworthily.
Grace is a free gift, but it is also an awesome responsibility.
Costly grace is the gospel which must be sought again and again, the gift which must be asked for, the door at which a man must knock. Such grace is costly because it calls us to follow Jesus Christ. It is costly because it costs a man his life, and it is grace because it gives a man the only true life. God invites each of us to his banquet that we may share in his joy. Lord, you withhold no good thing from us and you lavish us with the treasures of heaven.