Allah says:

﴿أَفَمَن كَانَ عَلَى بَيِّنَةٍ مِّن رَّبِّهِ﴾

(Can then he, who stands on clear evidence from his Lord...) This means a person who is upon clear vision and certainty concerning Allah's commands and His religion, because of the guidance and knowledge that Allah has revealed in His Book, and because of the pure nature upon which Allah has created him.

﴿كَمَن زُيِّنَ لَهُ سُوءُ عَمَلِهِ وَاتَّبَعُواْ أَهْوَاءَهُمْ﴾

((Can he) be likened to those for whom their evil deeds are beautified for them, while they follow their own lusts) which means that they cannot be equal. This is similar to Allah's saying,

﴿أَفَمَن يَعْلَمُ أَنَّمَآ أُنزِلَ إِلَيْكَ مِن رَبِّكَ الْحَقُّ كَمَنْ هُوَ أَعْمَى﴾

(Can he who knows that what has been revealed unto you from your Lord is the truth be like him who is blind) (13:19) And,

﴿لاَ يَسْتَوِى أَصْحَـبُ النَّارِ وَأَصْحَـبُ الْجَنَّةِ أَصْحَـبُ الْجَنَّةِ هُمُ الْفَآئِزُونَ ﴾

(Not equal are the people of the Fire and the people of Paradise. The People of Paradise will be the successful ones.) (59:20)