Why does it say "Hen Atem me'Ayin"?
Rashi: How can your words be fulfilled?!
Malbim: One chooses a matter due to its attribute, or due to a need or benefit, or to guard from damage. You have no attribute - you cannot tell the future, understand or know.
What is the meaning of "u'Fa'alchem me'Afa"?
Rashi: You only Po'im and make a loud voice to deceive with Sheker.
Radak: "Fa'alchem" is based on the intent of those who serve it. Really, the idol does not do anything. Me'Afa is like me'Efes, for Samech and Ayin are interchangeable according to the Aleph-Beis in 221 1 gates.
Radak citing his brother R. Moshe: me'Afa is like Ef'eh - your actions are like snakes, which kill those who cling to them.
Malbim: The actions that you attribute to idolatry - benefit and harm, is only Sheker that the priests say.
Makebetziel, citing the Aderes: It should say 231, like in Sefer Yetzirah. This is the number of pairs of different letters.
What is "To'evah Yivchar Bachem"?
Rashi: The despised choose you. Hashem and His servants do not. Radak - Hashem despises you.
Malbim: One who chooses you, chooses abomination, since you have no attribute or benefit.
