By portraying Jesus both as a son of David through Joseph and as virginally conceived, Matthew and Luke suggest that Joseph adopted Jesus into the Davidic line. Most modern interpreters assume that Joseph adopted Jesus through some Jewish law or custom. However, Yigal Levin has argued that adoption did not exist in Judaism and therefore the First and Third Evangelists must have appealed to Roman law (implying a gentile provenance for Matthew and Luke). This article reviews and critiques Levin's study and argues that early Jews did have a concept and practice of adoption and therefore an appeal to Roman law is unnecessary.