The Apostle Paul taught that believers should only marry other believers, so they will share the same spiritual life, love and loyalties.
Christian marriages are to reflect God’s unfailing love and covenant commitment for a lifetime, while demonstrating understanding, forgiveness and reconciliation. A believer is not to initiate divorce, without a biblical basis of adultery, abandonment or abuse.
But, if a new believer is already married to a non-believer, it could create certain tensions and relational challenges. Despite the holy influence of the believing spouse, human failures and frustrations may eventually prompt unbelievers to separate or seek divorce.
If the relationship has not been adversely affected by adultery, the Apostle Paul says believers are to pray for and seek reconciliation. Ultimately, they may need to peacefully endure the hurts and harms caused by divorce.