"But what do you think about this? A man with two sons told the older boy, 'Son, go out and work in the vineyard today.' The son answered, 'No, I won't go,' but later he changed his mind and went anyway. Then the father told the other son, 'You go,' and he said, 'Yes, sir, I will.' But he didn't go. Which of the two was obeying his father?"They replied, "The first of course." Then Jesus explained the meaning "I assure you, corrupt tax collectors and prostitutes will get into the Kingdom of God before you do. For John the Baptist came and showed you the way to life, and you didn't believe him, while tax collectors and prostitutes did. And even when you saw this happening, you refused to turn from your sins and believe him."
Matthew 21:28-32 NLT
Someone has said that the road to destruction is paved with good intentions. In this parable, Jesus is showing us that our actions prove our obedience or disobedience. Even though the one son had no intention of obeying, the fact that he obeyed in the end made him the obedient son. The other son said the right thing but didn't follow through, and he was therefore disobedient. We are reminded that our professions of faith are only as valid as the actions that follow them. Which brother in this story illustrates your walk with Christ?