What does the Bible say about marriage vows?

In Ephesians 5, the marriage vow is seen as a serious binding agreement before God, stemming from the relationship between Christ and the church. The Scripture warns in Ecclesiastes 5:5 that it is better not to vow than to vow and not keep it. This underscores the gravity of entering into such a covenant. The marriage vow, therefore, is not merely a social contract but a reflection of God's covenant with His people, demonstrating the seriousness with which His followers should approach the institution of marriage.