Ta-Ha
وَلَوْ أَنَّآ أَهْلَكْنَـٰهُم بِعَذَابٍ مِّن قَبْلِهِۦ لَقَالُوا۟ رَبَّنَا لَوْلَآ أَرْسَلْتَ إِلَيْنَا رَسُولًا فَنَتَّبِعَ ءَايَـٰتِكَ مِن قَبْلِ أَن نَّذِلَّ وَنَخْزَىٰ
And if We had destroyed them with a punishment before him, they would have said, "Our Lord, why did You not send to us a messenger so we could have followed Your verses before we were humiliated and disgraced?"
Nearby ayahs help place verse 20:134 in sequence and meaning.
وَأْمُرْ أَهْلَكَ بِٱلصَّلَوٰةِ وَٱصْطَبِرْ عَلَيْهَا ۖ لَا نَسْـَٔلُكَ رِزْقًا ۖ نَّحْنُ نَرْزُقُكَ ۗ وَٱلْعَـٰقِبَةُ لِلتَّقْوَىٰ
And enjoin prayer upon your family [and people] and be steadfast therein. We ask you not for provision; We provide for you, and the [best] outcome is for [those of] righteousness.
وَقَالُوا۟ لَوْلَا يَأْتِينَا بِـَٔايَةٍ مِّن رَّبِّهِۦٓ ۚ أَوَلَمْ تَأْتِهِم بَيِّنَةُ مَا فِى ٱلصُّحُفِ ٱلْأُولَىٰ
And they say, "Why does he not bring us a sign from his Lord?" Has there not come to them evidence of what was in the former scriptures?
قُلْ كُلٌّ مُّتَرَبِّصٌ فَتَرَبَّصُوا۟ ۖ فَسَتَعْلَمُونَ مَنْ أَصْحَـٰبُ ٱلصِّرَٰطِ ٱلسَّوِىِّ وَمَنِ ٱهْتَدَىٰ
Say, "Each [of us] is waiting; so wait. For you will know who are the companions of the sound path and who is guided."