According to the genealogies of Genesis, he was born of Ram (also known as Aram) during the Israelite exile in Ancient Egypt. He was also the father of Nahshon, chief of the tribe of Judah (Numbers 1:7; 2:3; 7:12, 17; 10:14). His daughter Elisheva was Aaron's wife (Exodus 6:23), making him Aaron's father-in-law.
Amminadab is one of the ancestors of Christ painted in the lunettes of the Sistine chapel.
In Bloodline of the Holy Grail, revisionist historian Laurence Gardner proposes Amminadab to be Akhenaten, allegedly the historical basis for Moses. According to Gardner's speculation, when Thutmose IV died, his son Amenhotep III married his sister Sitamun. Once he had secured his pharonic throne, he also married Tiye, the daughter of Chief Minister Yuya, who has been hypothesized to be the biblical patriarch Joseph, son of Jacob.