I was shapen in iniquity , and in sin did my mother conceive me . Surely I was sinful at birth, sinful from the time my mother conceived me. Sin started with Adam and passed on to all men. Jesus was the only exception because God formed Jesus in Mary his mother. Therefore, only Jesus did not have sin through birth.
All people have sin when they are conceived.
And as I may so say, Levi also , who receiveth tithes, payed tithes in Abraham. These verses show that the characteristics genes of a person pass from one generation to the next. In the same way, sin is passed. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. The above verses show that people are of the devil and after becoming Christians are of God.