Why is calling on the name of the Lord important for Christians?

In Romans 10:12, it highlights the importance of calling on the name of the Lord as a means through which salvation is obtained. This calling is not just a simple recognition but is an expression of faith that denotes total dependence on Christ for salvation. It affirms the believer's understanding of God's grace and mercy, as it indicates that they are reaching out to the only one who can save them. Thus, it goes beyond mere words; it involves a heartfelt plea to the Lord, acknowledging His authority and power to save.