Prophets of Tawheed always had enemies !

Know, that Allah from His Hikmah did not send a Prophet with this Tawheed except that He appointed for him enemies as Allah says:

"And thus We have made for every Prophet an enemy, devils from mankind and jinn. Inspiring one another with eloquent speech of delusion" [6:112]

And it could be that the enemies of Tawheed possess knowledge of many sciences, books and evidences as The Most High says:

"And when their Messengers came to them with clear evidence, they rejoiced because of what they possessed of knowledge" [40:83]

If you have understood this and you know that the path to Allah will always have enemies and opponents in it, people who possess eloquent speech, knowledge, and evidence, then it is incumbent upon you that you learn enough of the Deen of Allah that will enable you to arm yourself with a weapon that you can use to confront these shayateen, whose leader and chief said to your Lord:

"I will surely sit waiting for them upon Your straight path. Then I will approach them from before them and from behind them and from their right and from their left, and you will not find most of them grateful" [7:16-17]

But if you turn to Allah and pay close attention to His clear proofs and evidences then do not fear or grieve:

"Indeed the plot of shaytaan is weak" [4:76]

And the common one from amongst the Muwahhideen can overcome a thousand scholars of the mushrikeen as the Most High says:

"And indeed, Our soldiers will be those who overcome" [37:173]

So the army of Allah will prevail by way of clear proofs and arguments of the tongue just as they prevail by way of the sword and spear. There is only fear for the Muwahhid who traverses upon this path unarmed (without ‘ilm). And certainly Allah has blessed us with a Book which is:

"A clarification for all things and a guidance, mercy and glad tidings for the Muslimeen" [16:89]

So a person of baatil cannot present any argument except that there is in the Qur’an that which refutes it and clarifies its fallacy, as the Most High says:

"And they do not come to you with an example except that We bring you the truth and the best explanation" [25:33]

And some of the Mufassireen have said this Ayah is general and encompasses every argument presented by ahlul baatil until Yawmul Qiyamah.

[Taken from ”Kashfu Shubahaat” - Shaykhul Islam Muhammad ibnu ‘Abdul Wahhab (rahimahUllah)]