Second, John wrote:”Whosoever believeth that Jesus is the Christ is born of God” (1 John 5:1).
A man who is born again, or regenerated, believes that Jesus Christ is the only Saviour who can pardon his soul, that He is the divine Person appointed by God the Father for this very purpose, and beside Him there is no Saviour at all. In himself he sees nothing but unworthiness. But he has full confidence in Christ, and trusting in Him, he believes that his sins are all forgiven. He believes that, for the sake of Christ’s finished work and death on the Cross, he is reckoned righteous in God’s sight, and he may look forward to death and judgment without alarm (Romans 4:20-5:1; 8:1).
He may have fears and doubts. He may sometimes tell you that he feels as if he had no faith at all. But ask him if he is willing to trust in anything instead of Christ, and see what he will say. Ask him if he will rest his hope of eternal life on his own goodness, his own works, his prayers, his minister, or his church, and listen to his reply. What would the apostle say about you? Are you born again?
–J.C. Ryle, tract Are You Born Again?