Leviticus 20:21

And if a man shall take his brother’s wife, it is an unclean thing: he hath uncovered his brother’s nakedness; they shall be childless.

Leviticus 20:21 (KJV)

Context

Leviticus records the laws God gave to Israel through Moses. This verse belongs to a section listing serious sexual sins and their penalties. These laws set Israel apart as a holy nation, maintaining purity, order, and reverence within the community. They were part of the holiness code, which called God’s people to live differently from the surrounding nations.

Meaning

The verse forbids a man from taking his brother’s wife. The phrase “uncovered his brother’s nakedness” is a Hebrew idiom used throughout Leviticus. It means engaging in a sexual relationship with a close relative, here a brother’s wife. This act is called “an unclean thing,” showing that it defiles the person and violates a sacred boundary. The consequence is that the couple “shall be childless.” God would not bless such a union with offspring. The punishment is severe because the sin breaks the family bond, dishonors the brother, and disrupts the social and spiritual order God designed for families. This law underscores the seriousness of sexual sin and the importance of honoring God’s design for marriage and family.

Biblical connections

This prohibition connects to Leviticus 18:16, which also forbids uncovering a brother’s wife’s nakedness. It differs from the levirate duty in Deuteronomy 25:5, where a brother married his deceased brother’s widow to preserve the family line. That exception applied only when the brother died without a son and is no longer in force. Leviticus 20:21 addresses a living brother, making the union an act of betrayal. The holiness code, of which this verse is part, called Israel to live differently from surrounding nations.

Application

Although ceremonial and civil laws of the Old Testament no longer bind Christians under the New Covenant, the principles behind them still guide us. This verse teaches the importance of honoring marriage and respecting family boundaries. Believers must uphold the sacredness of marriage and avoid any sexual relationship that violates God’s design. Sexual sin carries serious consequences, both in this life and in our relationship with God. The call to holiness remains for every generation. For Christians, this Old Testament law points to the need for holiness and the sanctity of marriage, while recognizing that Christ fulfills the law, providing forgiveness and cleansing from sin through His sacrifice.

Reflection

Jesus Christ fulfilled the requirements of the Old Testament law through His life, death, and resurrection. He brought a new covenant of love, grace, forgiveness, and redemption. While Leviticus 20:21 highlights the consequences of violating God’s laws, the hope found in Christ offers forgiveness and restoration for those who repent. This verse calls us to live in purity and to honor God in all relationships, trusting that His commands are for our good. In Christ, we receive both the standard and the strength to walk in it.