Truth versus falsehood in religious claims

وَإِلَىٰ عَادٍ أَخَاهُمْ هُودًا ۚ قَالَ يَـٰقَوْمِ ٱعْبُدُوا۟ ٱللَّهَ مَا لَكُم مِّنْ إِلَـٰهٍ غَيْرُهُۥٓ ۖ إِنْ أَنتُمْ إِلَّا مُفْتَرُونَ

And to ʿAad [We sent] their brother Hūd. He said, "O my people, worship Allāh; you have no deity other than Him. You are not but inventors [of falsehood].