How do we know the call of Christ is true?

The truth of Christ's call is grounded in His divine authority and the fulfillment of Old Testament prophecies regarding the Messiah. When He called Simon Peter and Andrew in Mark 1:16-18, they left their nets and followed Him without hesitation, showing that His call possessed an irresistible grace. The consistent transformation of lives among believers further validates the power of His call. The genuine response to the gospel message demonstrates its truth and efficacy, pointing to the reality of His lordship and the certainty of His promise to make believers 'fishers of men.'