How do we know divorce is wrong according to the Bible?

In Matthew 19, Jesus responds to questions about divorce by citing the original creation narrative to validate the permanence of marriage. He teaches that the only grounds for divorce is sexual immorality, effectively upholding the marriage bond as sacred and inviolable. This teaching counters the prevalent practices of His day, where divorces were granted for trivial reasons. The Lord's declaration that anyone who divorces and marries another commits adultery underscores the severity of breaking this divine institution. Thus, the biblical standard for marriage emphasizes commitment and fidelity, as it reflects Christ’s relationship with the Church.