How do we know that calling on the Lord leads to salvation?

The assurance of salvation for those who call upon the Lord is firmly rooted in Romans 10:13, which states that 'whosoever shall call upon the name of the Lord shall be saved.' This promise is repeated in Acts 2:21 and is supported by the prophetic word in Joel. Crucially, to truly call upon the Lord involves a heart led by the Holy Spirit, recognizing one’s sin and pleading for grace, which indicates that only God’s elect or called ones will genuinely seek the Lord's mercy. This conviction ensures that the promise of salvation stands true for those genuinely coming to Christ.