"And We have shown him the two ways," meaning: We have made clear to him the two paths: the path of guidance and the path of misguidance.
﴿وهديناه النجدين﴾ أَيْ: بَصَّرْنَاهُ السَّبِيلَيْنِ: سَبِيلَ الْهُدَى، وسبيل الضَّلَالَة