The Spider
وَإِن تُكَذِّبُوا۟ فَقَدْ كَذَّبَ أُمَمٌ مِّن قَبْلِكُمْ ۖ وَمَا عَلَى ٱلرَّسُولِ إِلَّا ٱلْبَلَـٰغُ ٱلْمُبِينُ
And if you [people] deny [the message] - already nations before you have denied. And there is not upon the Messenger except [the duty of] clear notification.
Nearby ayahs help place verse 29:18 in sequence and meaning.
وَإِبْرَٰهِيمَ إِذْ قَالَ لِقَوْمِهِ ٱعْبُدُوا۟ ٱللَّهَ وَٱتَّقُوهُ ۖ ذَٰلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ
And [We sent] Abraham, when he said to his people, "Worship Allah and fear Him. That is best for you, if you should know.
إِنَّمَا تَعْبُدُونَ مِن دُونِ ٱللَّهِ أَوْثَـٰنًا وَتَخْلُقُونَ إِفْكًا ۚ إِنَّ ٱلَّذِينَ تَعْبُدُونَ مِن دُونِ ٱللَّهِ لَا يَمْلِكُونَ لَكُمْ رِزْقًا فَٱبْتَغُوا۟ عِندَ ٱللَّهِ ٱلرِّزْقَ وَٱعْبُدُوهُ وَٱشْكُرُوا۟ لَهُۥٓ ۖ إِلَيْهِ تُرْجَعُونَ
You only worship, besides Allah, idols, and you produce a falsehood. Indeed, those you worship besides Allah do not possess for you [the power of] provision. So seek from Allah provision and worship Him and be grateful to Him. To Him you will be returned."
أَوَلَمْ يَرَوْا۟ كَيْفَ يُبْدِئُ ٱللَّهُ ٱلْخَلْقَ ثُمَّ يُعِيدُهُۥٓ ۚ إِنَّ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌ
Have they not considered how Allah begins creation and then repeats it? Indeed that, for Allah, is easy.
قُلْ سِيرُوا۟ فِى ٱلْأَرْضِ فَٱنظُرُوا۟ كَيْفَ بَدَأَ ٱلْخَلْقَ ۚ ثُمَّ ٱللَّهُ يُنشِئُ ٱلنَّشْأَةَ ٱلْـَٔاخِرَةَ ۚ إِنَّ ٱللَّهَ عَلَىٰ كُلِّ شَىْءٍ قَدِيرٌ
Say, [O Muhammad], "Travel through the land and observe how He began creation. Then Allah will produce the final creation. Indeed Allah, over all things, is competent."