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

Calling upon the name of the Lord is integral to the Christian faith as it embodies a believer's response to God's call of salvation. Romans 10:9-10 links calling upon the Lord with confessing Christ as Savior and believing in His resurrection, highlighting that salvific faith must express itself through a recognition of His lordship. This calling isn't a mere formality but represents a genuine relational act of reliance on Christ.

Furthermore, this act is also an assurance for the believer; as articulated in Acts 2:21 and echoed throughout Scripture, those who sincerely call upon the Lord will not be disappointed or ashamed (Romans 10:11). This direct relationship with God through Christ instills confidence, giving believers hope and an enduring connection to the grace and mercy of God.