The Helplessness of the gods of the Idolators Here
Allah states clearly that He is the One and Only God, the Self-Sufficient Master, Who has no peer or partner; He is independent in His command and there is no one who can share or dispute with Him in that, or overturn His command.
So, He says:
قل ادعوا الذين زعمتم من دون الله
Say: "Call upon those whom you assert besides Allah...''
meaning, the gods who are worshipped besides Allah.
ﻻ يملكون مثقال ذرة في السماوات وﻻ في اﻻرض
they possess not even the weight of a speck of dust, either in the heavens or on the earth,
This is like the Ayah:
والذين تدعون من دونه ما يملكون من قطمير
And those, whom you invoke or call upon instead of Him, own not even a Qitmir. (35:13)
وما لهم فيهما من شرك
nor have they any share in either,
means, they do not possess anything, either independently or as partners.
وما له منهم من ظهير
nor there is for Him any supporter from among them.
means, nor does Allah have among these rivals any whose support He seeks in any matter; on the contrary, all of creation is in need of Him and is enslaved by Him.
Then Allah says: