اُولٰۤىِٕكَ الَّذِيْنَ يَدْعُوْنَ يَبْتَغُوْنَ اِلٰى رَبِّهِمُ الْوَسِيْلَةَ اَيُّهُمْ اَقْرَبُ وَيَرْجُوْنَ رَحْمَتَهٗ وَيَخَافُوْنَ عَذَابَهٗۗ اِنَّ عَذَابَ رَبِّكَ كَانَ مَحْذُوْرًا ( الإسراء: ٥٧ )
Ulaaa'ikal lazeena yad'oona yabtaghoona ilaa Rabbihimul waseelata ayyuhum aqrabu wa yarjoona rahmatahoo wa yakhaafoona 'azaabah; inna 'azaaba rabbika kaana mahzooraa (al-ʾIsrāʾ 17:57)
Those whom they invoke seek means of access to their Lord, [striving as to] which of them would be nearest, and they hope for His mercy and fear His punishment. Indeed, the punishment of your Lord is ever feared. (Al-Isra  : 57)
1 Mufti Taqi Usmani
Those whom they invoke, do themselves seek the means of access to their Lord as to which of them becomes the closest, and they hope for His Mercy and fear His punishment. The punishment of your Lord is really something to be feared.