قَوْلُهُ تَعَالَى: {أُولَئِكَ الَّذِينَ يَدْعُونَ يَبْتَغُونَ إِلَى رَبِّهِمُ الْوَسِيلَةَ} [الإسراء: 57]

Regarding the explanation of the Verse: 'Those whom they call upon (worship) (like Jesus the Son of Mary, angels etc.) desire (for themselves) means of access to their Lord (Allah) as to which of them should be the nearer and they hope for His Mercy and fear His torment.' (17.57) They themselves (e.g. Angels, saints, Apostles, Jesus, etc.,) worshipped Allah, Those Jinns who were worshipped by some Arabs became Muslims (embraced Islam), but those human beings stuck to their (old) religion. Al- Aʿmash said extra: 'Say, (O Muhammad): Call unto those besides Him whom you assume (to be gods).' (17.56)  

كَانَ نَاسٌ مِنَ الإِنْسِ يَعْبُدُونَ نَاسًا مِنَ الْجِنِّ فَأَسْلَمَ الْجِنُّ وَتَمَسَّكَ هَؤُلاَءِ بِدِينِهِمْ زَادَ الأَشْجَعِيُّ عَنْ سُفْيَانَ عَنِ الأَعْمَشِ {قُلِ ادْعُوا الَّذِينَ زَعَمْتُمْ}  

" Those to whom they call upon, themselves seek the means or access to their Lord as to whoever of them becomes nearest" (xvii. 57) that it related to a party of Jinn who were being worshipped and they embraced Islam but those who worshipped them kept on worshipping them (though the Jinn whom the misguided people worshipped had become Muslims). It was then that this verse was revealed.  

عَنْ عَبْدِ اللَّهِ فِي قَوْلِهِ ﷻ { أُولَئِكَ الَّذِينَ يَدْعُونَ يَبْتَغُونَ إِلَى رَبِّهِمُ الْوَسِيلَةَ أَيُّهُمْ أَقْرَبُ} قَالَ كَانَ نَفَرٌ مِنَ الْجِنِّ أَسْلَمُوا وَكَانُوا يُعْبَدُونَ فَبَقِيَ الَّذِينَ كَانُوا يَعْبُدُونَ عَلَى عِبَادَتِهِمْ وَقَدْ أَسْلَمَ النَّفَرُ مِنَ الْجِنِّ