What are the characteristics of your sinful nature?
Why is being born through sexual act be considered that the baby is sinned while Jesus who was born of a virgin is sinless Is sex sin?
Firstly, it must be understood that the Bible nowhere teaches that the sexual act is itself sinful. Context determines sin, in this and many other cases. The inherited sinful nature has nothing whatever to do with sex of itself, even if the context of that act was indeed sinful. Jesus sinlessness had to do with His being divine, and to the fact He did not inherit our sinful nature.