What does it mean to call upon the Lord?

Calling upon the Lord is a profound acknowledgment of our dependence on Him for salvation. Romans 10:13 states, 'For whosoever shall call upon the name of the Lord shall be saved.' This act encompasses genuine faith, where one looks to Christ as the only hope for redemption. The sermon elaborates that this is not merely a verbal profession but an inward realization of our helplessness and need for divine grace. It highlights that even the Apostle Paul, with all his religious zeal, had not truly called upon the Lord until his transformative encounter with Christ. This truth reminds believers that salvation is entirely the work of God, initiated by His grace.