How do we know marriage is a covenant?

The biblical concept of marriage as a covenant is rooted in Genesis 2:24, which states that a man shall leave his father and mother and be joined to his wife, and they shall become one flesh. This union is not just a contractual arrangement but a sacred covenant before God. It reflects the relationship between Christ and the Church, where love, commitment, and fidelity are paramount. The intention behind this covenant is for both parties to support and love each other throughout their lives, illustrating the nature of God's covenant with His people.