Do my parents fear that I'll leave the faith?

[notimportant1234]

Some sins do cause illness.

Oh?

Well some of the sins may have an impact on your health, there are a lot of sins soo making him prove that sin causses accidents or illness is not a good aproach.

Edit: It is like trying to dismiss Karma. It is bassed on probability if you for example beat people on the street repetedly eventualy someone will beat the crap out of you, and than you add mysticism or not.