1)
What is the meaning of "Atzabei ha'Goyim Kesef v'Zahav"?
1.
Radak: Then, those who served the Goyim's idols will realize that they are powerless; they do not save them from their afflictions. They are mere silver and gold.
2.
Malbim: After saying that Hashem is greater than all Elohim 1 , it says that the Goyim's idols are nothing. Their substance is silver and gold; they were made via people; also refer to 135:16:1:2.
1
I.e. angels appointed over Heavenly bodies or the other nations. (PF)