Scripture forbids incestuous relationships (sexual relations between parents and children, brothers and sisters, half-siblings, aunts and nephews, and uncles and nieces) as written in Leviticus 18:1-18, but strangely never forbids marriages between cousins although many look upon such relations with as much distain as those forbidden by scripture.
https://www.ancientpages.com/2....021/09/14/cousin-mar
