You’re reading as a Christian man—highly selectively and only for the information that fits into your existing mental grid. The paper I cited details the long history of rabbinic efforts to read the verse. In the Talmud it’s called a prohibition on anal sex with women. Pg 160. https://www.academia.edu/15817683/_Sex_in_the_Talmud_How_to_Understand_Leviticus_18_and_20_