With the name of Allah Most Gracious, Most Merciful
Sura 21 (Anbiyaa)
Truth vs Falsehood(Haqq vs Baatil)
Verse 18: “Nay, We hurl the Truth against falsehood, and it knocks out its brain, and behold falsehood does perish! Ah! Woe be to you for the (false )things you ascribe( to Us)”
In this verse Allah uses very powerful imagery to illustrate how truth crushes falsehood. Whatever emanates from Allah is the Truth and shirk is the greatest falsehood. However powerful falsehood may appear to be it is bound to vanish. There are many examples in the Quran of the ultimate triumph of Truth (eg. The story of Moosa(AS) and Firaun).