What does the parable of the two sons teach about obedience?

In the parable of the two sons (Matthew 21:28-32), Jesus contrasts the son who initially refuses his father's command but later repents and obeys, with the son who claims to obey but fails to act. This teaches that true obedience is not about mere words but about genuine actions arising from a humble heart. The first son represents those who may initially resist God's call but, through repentance and faith, turn to Christ and fulfill His commands. In contrast, the second son symbolizes the self-righteous who profess faith but lack true obedience, reflecting an empty commitment to God. This parable emphasizes that a heart transformed by grace produces genuine obedience to God’s will.