Surah Al-Kahf Verse 56 - English Translation by A. J. Arberry
Surah Al-Kahfوَمَا نُرۡسِلُ ٱلۡمُرۡسَلِينَ إِلَّا مُبَشِّرِينَ وَمُنذِرِينَۚ وَيُجَٰدِلُ ٱلَّذِينَ كَفَرُواْ بِٱلۡبَٰطِلِ لِيُدۡحِضُواْ بِهِ ٱلۡحَقَّۖ وَٱتَّخَذُوٓاْ ءَايَٰتِي وَمَآ أُنذِرُواْ هُزُوٗا
And We send not the Envoys, but good tidings to bear, and warning. Yet do the unbelievers dispute with falsehood, that they may rebut thereby the truth. They have taken My signs, and what they are warned of, in mockery