12 But to the rest I, not the Lord, say: If any brother has a wife who does not believe, and she is willing to live with him, let him not divorce her. 13 And a woman who has a husband who does not believe, if he is willing to live with her, let her not divorce him. 14 For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband; otherwise your children would be unclean, but now they are holy. (1 Corinthians 7:12–14, NKJV)
Should a Christian end his or her marriage to an unbeliever? The apostle gives an inspired answer to that question as he addresses this subset of “the married” (verse 10). The “rest” to whom Paul now directs his attention are identified as Christians who are married to unbelievers (vss. 12, 13). Paul addresses a marriage situation that Jesus did not personally address, namely, whether a Christian should end a marriage to an unbeliever. The answer he gives is “no” – when the unbeliever is “willing” to live with the Christian. The believer’s faithfulness to Christ blesses the family with the influence of truth and righteousness. His or her godly presence in the home helps convert the unbelieving spouse and teaches the children to be holy (1 Peter 3:1-2; 2 Timothy 1:5; Acts 16:1-2). God joins man and woman in marriage, whether or not they are believers (Genesis 2:21-24; Matthew 19:4-5). Christians have no right to end their marriage merely because they are married to an unbeliever. To do so directly violates the Lord’s command (1 Corinthians 7:10-11; Matthew 19:6).