Dangerous vision

 Rekanti (Vayikra 19:4)  You should know that there is a power within the sense of vision to cause both good and bad. That is why the evil eye causes damage. And thus if a tzadik curses and looks with an evil eye the damage can only be repaired if another tzadik does the opposite. From this reality it is possible to understand that there is a power in the senses to cause good and bad. This is why G-d  prohibited the Jews not to even look at idols as this provides power to the yetzer harah and surely they are not to enter temples of idolatry since the spirit of impurity resides there. A proof to this assertion is from Eliezer the servant of Avraham who did not want to enter into the house of Lavan until he removed all his idols.