Matthew 21:28 says, But what think ye? A certain man had two sons; and he came to the first, and said, Son, go work today in my vineyard.  Jesus was still speaking to the chief priests and elders, and He was still referring to their question about His authority to do the things He was doing.  Again, these were the religious leaders of God's people.  They should have been able to tell if God was at work, or if Jesus was just a man making false claims about Himself.  As followers of Christ today, we should be able to determine what is truly God's work in the world.  If we are following Christ and living under the leadership of the Holy Spirit, we should never be confused about what is of God and what is of man.  Jesus told them that a certain man told his son to go into the vineyard and work.  Then verse twenty-nine states, He answered and said, I will not: but afterward he repented, and went.  The son told his father he would not go, but later repented and went.  I believe that we can equate this son with those who at first are outside the will of God, and that would be anyone who does not accept God's authority in their life.  Then they repent and obey God's command.  We know that we can only do this through our faith in Christ.  Verse thirty  states, And he came to the second, and said likewise. And he answered and said, I go, sir: and went not.  The father came to a second son and told him the same thing, to go and work in the vineyard.  The second son respectfully said that he would.  I believe that this would be those, who like the chief priests and elders, claim that they are doing what God wants them to do, but really reject His authority in their lives.  No matter how respectful we may claim to be to God, we must do more than pay lip service to His commands.  In verse thirty-one Jesus asks, Whether of them twain did the will of his father? They say unto him, The first. Jesus saith unto them, Verily I say unto you, That the publicans and the harlots go into the kingdom of God before you.  Jesus asks the chief priests and elders which of the sons did the will of his father.  This is a question we need to ask ourselves.  Are we really doing what God is calling us to do, or are we only claiming to without any real obedience.  The chief priests and elders answered that the first son obeyed.  It is better to at first say that we aren't going to do God's wili and then do it, than to say that we will and then not do it.  Jesus told the chief priests and elders that publicans and harlots would go into heaven before they did, because the chief priests and elders were professing to obey the heavenly Father and they weren't.  The publicans and harlots would enter because even though they had said they would not obey the heavenly Father, when they accepted Jesus as Savior and Lord they did obey Him.  The chief priests and elders could not get into heaven unless they also accepted Jesus as their Savior and Lord.  Self righteous would never grant them entry into heaven.  Verse thity-two says, For John came unto you in the way of righteousness, and ye believed him not: but the publicans and the harlots believed him: and ye, when ye had seen it, repented not afterward, that ye might believe him.  Jesus said that John the Baptist came to the chief priests and elders proclaiming the way of righteousness, and they did not believe him, whereas the publicans and harlots did.  When we hear the gospel proclaimed, unless we accept it as truth in our lives, then no matter how good of a person we may be, we like the chief priests and elders will not enter heaven.  The only way to everlasting life with the Father in heaven is through faith in the Son in this life.