In the context of the Bible, an "unbeliever" refers to an individual who does not accept or adhere to the Christian faith. This term is often used to describe those who have not placed their trust in Jesus Christ as their Lord and Savior. An "inquirer," on the other hand, may refer to someone who is exploring or seeking to understand the Christian faith but has not yet made a commitment to it.

Biblical References:

1. Nature of Unbelief:
The Bible frequently addresses the nature and consequences of unbelief. In 2 Corinthians 4:4 , the Apostle Paul writes, "The god of this age has blinded the minds of unbelievers, so they cannot see the light of the gospel of the glory of Christ, who is the image of God." This passage highlights the spiritual blindness that can accompany unbelief, preventing individuals from recognizing the truth of the gospel.

2. Call to Faith:
Scripture consistently calls unbelievers to faith in Christ. In Acts 16:31 , Paul and Silas instruct the Philippian jailer, "Believe in the Lord Jesus, and you will be saved—you and your household." This call to belief underscores the central Christian tenet that salvation is through faith in Jesus Christ.

3. Consequences of Unbelief:
The Bible warns of the eternal consequences of remaining in unbelief. In John 3:18 , Jesus states, "Whoever believes in Him is not condemned, but whoever does not believe has already been condemned, because he has not believed in the name of God’s one and only Son." This verse emphasizes the gravity of unbelief and the importance of faith for salvation.

4. Engagement with Inquirers:
Christians are encouraged to engage with inquirers, providing answers and sharing the hope found in Christ. 1 Peter 3:15 advises believers, "But in your hearts sanctify Christ as Lord. Always be prepared to give a defense to everyone who asks you the reason for the hope that is in you. But respond with gentleness and respect." This instruction highlights the importance of being ready to share one's faith with those who are seeking.

5. Transformation through Faith:
The Bible speaks of the transformative power of faith for those who move from unbelief to belief. In 2 Corinthians 5:17 , Paul declares, "Therefore if anyone is in Christ, he is a new creation. The old has passed away; behold, the new has come!" This transformation is a key aspect of the Christian message, offering hope and renewal to those who believe.

Practical Considerations:

· Evangelism and Witnessing:
Christians are called to share the gospel with unbelievers and inquirers, as seen in the Great Commission (Matthew 28:19-20). This involves not only proclaiming the message of salvation but also living out one's faith in a way that reflects the love and truth of Christ.

· Prayer for Unbelievers:
Believers are encouraged to pray for those who do not yet know Christ, asking God to open their hearts and minds to the truth of the gospel. In 1 Timothy 2:1-4 , Paul urges, "I urge, then, first of all, that petitions, prayers, intercessions, and thanksgiving be made for all people... This is good and pleasing in the sight of God our Savior, who wants all people to be saved and to come to a knowledge of the truth."

· Community and Support:
The Christian community plays a vital role in supporting inquirers and new believers, providing fellowship, teaching, and encouragement as they grow in their faith. Acts 2:42 describes the early church's commitment to "the apostles’ teaching and to the fellowship, to the breaking of bread and to prayer," serving as a model for nurturing spiritual growth.

In summary, the Bible provides a comprehensive framework for understanding the nature of unbelief, the call to faith, and the role of believers in engaging with unbelievers and inquirers. Through prayer, evangelism, and community support, Christians are equipped to share the transformative message of the gospel with those who seek truth.