Why is it important for Christians to understand their need for a mediator?

For Christians, acknowledging the need for a mediator is foundational to the faith. Jesus Christ, as the sole mediator, intercedes on behalf of sinners before a just God. His righteousness is what allows God to accept us, rather than our own flawed attempts to earn favor. When believers grasp that their standing before God is secured solely through Christ's mediatory work, they are liberated from the burdens of performance and can rest in His completed work. This understanding fosters a deep sense of gratitude and reliance on the grace and mercy of God.