There is an immediacy about the kingdom: one is expected to be ready and prepared to move quickly once confronted with the Kingdom. We have already seen this in the parable of the dishonest manager.
MT 22:2-13 "[Jesus said,] `The kingdom of heaven is like this. Once there was a king who prepared a wedding feast for his son. He sent his servants to tell the invited guests to come to the feast, but they did not want to come....So the servants went out into the streets and gathered all the people they could find, good and bad alike; and the wedding hall was filled with opeople. The king went in to look at the guests and saw a man who was not wearing wedding clothes. "Friend, how did you get in here without wedding clothes?" the king asked him. But the man said nothing. Then the king told the servants, "Tie him up hand and foot, and throw him outside in the dark. There he will cry and gnash his teeth."'"
Comment: The king's servants are dragging people off of the street to this wedding feast and the king is upset because some are there without formal clothes! The focus of this parable is on being prepared and ready.