And warn by the Qur'an those who fear that they will be (6:51)

Almuntakhab Fi Tafsir Alquran Alkarim

And use the Quran O Muhammad to warn those who are apprehensive of the inevitable occasion when they are thronged before Allah, their Creator, besides Whom they simply have no tutelary protector nor an intercessor, they may, hopefully entertain the profound reverence dutiful to Him

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(6:51) And warn with this (revealed message) those who fear that they shall be mustered to their Lord, that there will be none apart from Allah to act as their protector and intercessor; then maybe they will become God-fearing. *33

And warn by the Qur'an those who fear that they will be meaning

*33). Those who are too deeply immersed in the allurements of earthly life to think either of death or of their being brought to stand before God for His judgement can hardly benefit from such admonitions. Likewise, such admonitions can have no wholesome effect on those who cherish the illusion that because of their attachment to some holy personage who will intercede on their behalf, they will come to no harm in the Hereafter. The same applies to those who believe that someone has already obtained their redemption by expiating their sins. The Prophet (peace be on him) is therefore asked to disregard such persons and to attend to those who are conscious, those with no false illusions. Only these people are susceptible to admonitions and can be expected to reform themselves.
 

And warn by the Qur'an those who fear that they will be meaning in Urdu

اے محمدؐ! تم اس (علم وحی) کے ذریعہ سے اُن لوگوں کو نصیحت کرو جو اس بات کا خوف رکھتے ہیں کہ اپنے رب کے سامنے کبھی اس حال میں پیش کیے جائیں گے کہ اُس کے سوا وہاں کوئی (ایسا ذی اقتدار) نہ ہوگا جو ان کا حامی و مدد گار ہو، یا ان کی سفارش کرے، شاید کہ (اس نصیحت سے متنبہ ہو کر) وہ خدا ترسی کی روش اختیار کر لیں