Someday I will travel. Someday I will save enough money to renovate my house. Someday I will change my bad habits and treat my body and my life in a manner consistent with God's will for my life.
But someday will never get here, as long as I continue to put off actions that move me closer to them. Jesus knew that people have been invited to God's banquet - to eat and sleep, walk and talk in the ways of God. They could wait for someday to live as God desires. Or they could go after it now, and eat the sweet treats God offers.
One of the dinner guests, on hearing this, said to him, “Blessed is anyone who will eat bread in the kingdom of God!” Then Jesus said to him, “Someone gave a great dinner and invited many. At the time for the dinner he sent his slave to say to those who had been invited, ‘Come; for everything is ready now.’ But they all alike began to make excuses. The first said to him, ‘I have bought a piece of land, and I must go out and see it; please accept my regrets.’ Another said, ‘I have bought five yoke of oxen, and I am going to try them out; please accept my regrets.’ Another said, ‘I have just been married, and therefore I cannot come.’ So the slave returned and reported this to his master. Then the owner of the house became angry and said to his slave, ‘Go out at once into the streets and lanes of the town and bring in the poor, the crippled, the blind, and the lame.’ And the slave said, ‘Sir, what you ordered has been done, and there is still room.” Then the master said to the slave, ‘Go out into the roads and lanes, and compel people to come in, so that my house may be filled. For I tell you, none of those who were invited will taste my dinner.’”