Jonah
وَمَا كَانَ ٱلنَّاسُ إِلَّآ أُمَّةً وَٰحِدَةً فَٱخْتَلَفُوا۟ ۚ وَلَوْلَا كَلِمَةٌ سَبَقَتْ مِن رَّبِّكَ لَقُضِىَ بَيْنَهُمْ فِيمَا فِيهِ يَخْتَلِفُونَ
And mankind was not but one community [united in religion], but [then] they differed. And if not for a word that preceded from your Lord, it would have been judged between them [immediately] concerning that over which they differ.
Nearby ayahs help place verse 10:19 in sequence and meaning.
فَمَنْ أَظْلَمُ مِمَّنِ ٱفْتَرَىٰ عَلَى ٱللَّهِ كَذِبًا أَوْ كَذَّبَ بِـَٔايَـٰتِهِۦٓ ۚ إِنَّهُۥ لَا يُفْلِحُ ٱلْمُجْرِمُونَ
So who is more unjust than he who invents a lie about Allah or denies His signs? Indeed, the criminals will not succeed
وَيَعْبُدُونَ مِن دُونِ ٱللَّهِ مَا لَا يَضُرُّهُمْ وَلَا يَنفَعُهُمْ وَيَقُولُونَ هَـٰٓؤُلَآءِ شُفَعَـٰٓؤُنَا عِندَ ٱللَّهِ ۚ قُلْ أَتُنَبِّـُٔونَ ٱللَّهَ بِمَا لَا يَعْلَمُ فِى ٱلسَّمَـٰوَٰتِ وَلَا فِى ٱلْأَرْضِ ۚ سُبْحَـٰنَهُۥ وَتَعَـٰلَىٰ عَمَّا يُشْرِكُونَ
And they worship other than Allah that which neither harms them nor benefits them, and they say, "These are our intercessors with Allah " Say, "Do you inform Allah of something He does not know in the heavens or on the earth?" Exalted is He and high above what they associate with Him
وَيَقُولُونَ لَوْلَآ أُنزِلَ عَلَيْهِ ءَايَةٌ مِّن رَّبِّهِۦ ۖ فَقُلْ إِنَّمَا ٱلْغَيْبُ لِلَّهِ فَٱنتَظِرُوٓا۟ إِنِّى مَعَكُم مِّنَ ٱلْمُنتَظِرِينَ
And they say, "Why is a sign not sent down to him from his Lord?" So say, "The unseen is only for Allah [to administer], so wait; indeed, I am with you among those who wait."
وَإِذَآ أَذَقْنَا ٱلنَّاسَ رَحْمَةً مِّنۢ بَعْدِ ضَرَّآءَ مَسَّتْهُمْ إِذَا لَهُم مَّكْرٌ فِىٓ ءَايَاتِنَا ۚ قُلِ ٱللَّهُ أَسْرَعُ مَكْرًا ۚ إِنَّ رُسُلَنَا يَكْتُبُونَ مَا تَمْكُرُونَ
And when We give the people a taste of mercy after adversity has touched them, at once they conspire against Our verses. Say, "Allah is swifter in strategy." Indeed, Our messengers record that which you conspire