What Does Deuteronomy 27:21 Mean?

Cursed be he that lieth with any manner of beast—This curse prohibits bestiality (shokev im behemah, שֹׁכֵב עִם בְּהֵמָה), a practice condemned in Exodus 22:19 and Leviticus 18:23, 20:15-16 with the death penalty for both human and animal. The phrase "any manner of beast" (kol-behemah) emphasizes absolute prohibition regardless of animal type.

Bestiality represents the ultimate degradation of human sexuality, crossing not just moral but creational boundaries established at Genesis 1-2. It violates the image of God in humanity, the ordained complementarity of male and female, and the distinction between humans and animals. Such practices characterized Canaanite depravity (Leviticus 18:24-25) that defiled the land itself, bringing divine judgment.

The progression in these sexual curses moves from household boundary violations (father's wife, sister) to species boundary violations (bestiality), showing how sexual sin escalates when God's creational design is abandoned. Paul's description of moral degradation in Romans 1:24-28 follows similar logic—rejecting God leads to "vile affections" and "against nature" practices.