Non-Christian: Meaning and Definition

A non-Christian is anyone who is not a believer in Jesus Christ, and if they die without accepting His gift of salvation they will be doomed forever to the lake of fire, commonly called hell (Rev 20:15, 21:8). This includes those who have 'a form of religion' yet do not have a vital personal relationship with Him, as well as those entrapped in false religions or belief systems. A definition of a Christian is one who acknowledges Jesus, has repented of their sin, received Him as Saviour, and tries to live by the teachings of the Bible especially the New Testament. Thus, a non-Christian person or non-Christian religion fails to agree with, and follow the essential, non-negotiable 'facts' of Christianity.

We are to relate and associate with those who don't know Christ, with the hope they will become followers of Christ. While we are to be separate from the non-Christian's sin, we are not to isolate ourselves from them as people, rather being witnesses to them of Jesus who loves and died for them. Friendship evangelism — building authentic, caring relationships with non-Christians — is one of the most effective ways to share the gospel, as people are often more open to the message when they first experience the love of Christ through a trusted friend (Jn 13:34-35). Christians are called to be salt and light in the world (Mt 5:13-16), engaging with non-Christians in everyday life while maintaining their own spiritual integrity and distinctiveness.

Believers are not to enter into binding agreements with those who are not Christians (2 Cor 6:14-16). This includes marriage and business partnerships, where unequal spiritual yoking can lead to compromise, conflict, and a drifting away from faith. The principle of being 'unequally yoked' underscores the importance of shared values and spiritual alignment in life's most significant commitments, while still honouring Christ's command to love all people.