How do we know that marriage is designed by God?

In Genesis 2:21-22, we see that God created Eve from the rib of Adam, highlighting that marriage is designed by the Creator for the companionship and aid of man. This act signifies that she is not only a partner but also a part of Adam's very being, reflecting the divine purpose behind the institution of marriage. Furthermore, the institution of marriage is confirmed in Scripture through its repeated association with God's covenant relations, which extends to the redemptive work of Christ for His Church. The unique creation and subsequent union of husband and wife affirm the divine ordination of marriage.