Why is the concept of a good tree and bad tree important for Christians?

In Matthew 12:33-37, Jesus explains that the tree is known by its fruit, which teaches us that a person's inner spiritual state is revealed through their actions and words. This metaphor highlights the importance of bearing good fruit, which reflects a heart transformed by grace. For Christians, this concept is crucial because it underscores the necessity of examining our lives and ensuring that our words and deeds align with the righteousness of Christ. It serves as a reminder that genuine faith produces visible evidence, encouraging believers to strive for holiness and righteousness in their conduct, knowing that we will be held accountable for our words before God.