Was Mary a sinless perpetual virgin? Well, scripture says that the only person that never sinned was Jesus (Rom 3:23, Heb 4:14-15, & 2 Cor 5:21), and it also implies that Mary had children with Joseph after Jesus (Acts 1:14), and it specifies that they had intercourse after Jesus was born (Matt 1:25). This is a non-biblical church tradition. Believers are only accountable for believing what is written, not what we are told out of tradition.