"The kingdom of heaven is like a landowner who went out at dawn to hire laborers for his vineyard. After agreeing with them for the usual daily wage, he sent them into his vineyard. Going out about nine o'clock, he saw others standing idle in the marketplace, and he said to them, 'You too go into my vineyard, and I will give you what is just.' So they went off. (And) he went out again around noon, and around three o'clock, and did likewise…
He said to one of them in reply, 'My friend, I am not cheating you. Did you not agree with me for the usual daily wage? Take what is yours and go. What if I wish to give this last one the same as you? (Or) am I not free to do as I wish with my own money? Are you envious because I am generous?' Thus, the last will be first, and the first will be last." (Mt 20:1-16)
Kingdom of heaven is not a place of rest. It is a place where one goes to work. The owner invites people to work. It is not a work for nothing. The work brings reward. Interesting factors are that one can be called to come for work at anytime. The kingdom is not controlled by time or talent. It is open to anyone. It is an inclusive place. It includes everyone and entry is free and at anytime.
In the kingdom also we find grumblers. People come in with secular (social) mind. Their thinking is controlled by social values and social systems. They expect to be treated as they would be in the society. They expect social stratifications. They expect rewards according to their work. They expect the rule ‘first come first served’ to be practiced and hoped that the first come to be well paid etc.
But the attitude of the owner is important. He does the things that are not in a society. They are in the kingdom. Kingdom is a place where there are no criteria for entry. There is no time limit. The owner is a generous person and he is a good person. His goodness causes envy among people. He continues to be what he is.