Why is calling on the name of the Lord essential for salvation?

The concept of calling on the name of the Lord is essential because it acknowledges both our sinfulness and God's sovereignty in salvation. As seen in Acts 2:21, 'whosoever shall call on the name of the Lord shall be saved,' this is an invitation to recognize the character of God and our dependence on Him. Peter's audience realized their need for repentance after being pricked in their hearts. By calling on the Lord, individuals accept their position before a holy God and trust in His grace for forgiveness and life. This is a foundational aspect of the Christian faith and a demonstration of God's immense mercy.