BG Chap 16 - Results of not following scriptural rules

A person who knowingly violates the rules acts in lust. He knows that this is forbidden, but still he acts. He who thus acts according to his own whims, and does not follow the prescribed actions, and does what is forbidden by scripture, does not attain purification of heart, necessary for attaining the goal of life. Such a person attains neither perfection, nor happiness, nor the supreme destination.