When you believe on the Lord Jesus Christ, you are saved (Acts 16:31). You are saved when your heart is changed by the grace of God to believe in Christ (Romans 10:10). Conversion is your response to the Gospel through repentance toward God and faith in our Lord Jesus Christ (Acts 20:21).
Charles Spurgeon wrote, "The work of regeneration and the act of faith which brings justification to the penitent sinner are simultaneous and must, in the nature of the case, always be so." Spurgeon made it clear that regeneration and saving faith cannot be separated.
Spurgeon maintained that regeneration and saving faith occur simultaneously. That is to say, we cannot be born again without believing on the Lord Jesus Christ. Likewise, we cannot truly have saving faith in Christ and not be born again (1 John 5:1). Spurgeon used an illustration to show the connection between regeneration and believing in Christ. They are like two spokes on a wagon wheel. Both of them move together as the wheel turns.
Therefore, regeneration is new birth for all who believe in Jesus Christ our Lord (Romans 10:9). Likewise, regeneration means you are a born again believers in Christ (John 1:12-13). You are saved, when you believe on the Lord Jesus Christ (Acts 16:31). Regeneration, also known as new birth, and believing the gospel are inseparable.
