If their rejection gets to be too much for you, you should know that even if you dug a tunnel through the earth, or climbed a ladder into the sky, and produced a miracle for them (they still would not believe). Had God willed, He could have guided them, unanimously. Therefore, do not behave like the ignorant ones.
وَإِن كانَ كَبُرَ عَلَيكَ إِعراضُهُم فَإِنِ استَطَعتَ أَن تَبتَغِىَ نَفَقًا فِى الأَرضِ أَو سُلَّمًا فِى السَّماءِ فَتَأتِيَهُم بِـٔايَةٍ وَلَو شاءَ اللَّهُ لَجَمَعَهُم عَلَى الهُدىٰ فَلا تَكونَنَّ مِنَ الجٰهِلينَ
wa in kaana kabura ‘alaika i’raaduhum fa inistata’ta an tabtaghiya nafaqan fil ardi aw sullaman fis samaaa’i fata’ tiyahum bi Aayah; wa law shaaa’al laahu lajama’ahum ‘alal hudaa; falaa takoonanna minal jaahileen