Roger Chillingworth married Hester even though he knew that she did not love him. Marrying without love is just one of the sins he committed. He lies to all of Boston about his true identity and forces Hester to swear not to reveal it. He favors work over family life and seems not to care for the well being of his own kin. Roger Chillingworth is the greatest sinner because his sins were committed out of hate and were detrimental to other humans while the sins of Hester and Dimmesdale were committed out of love and should not have had any positive or negative effect upon the other townspeople (Pearl excluded).

Hester and Dimmesdale committed their primary sin, adultery, out of love. They felt an intimate attraction between themselves and Pearl was the result of that love. Hester and Dimmesdale, although they recognized what they did as wrong...