وَتِلْكَ حُجَّتُنَا اتَيْنَاهَا إِبْرَاهِيمَ عَلَى قَوْمِهِنَرْفَعُ دَرَجَاتٍ مَّن نَّشَاء إِنَّ رَبَّكَ حَكِيمٌ عَلِيمٌAnd that was Our proof which We gave Ibrahim against his people.means, We directed him to proclaim Our proof against them.Mujahid and others said that `Our proof' refers to,وَكَيْفَ أَخَافُ مَا أَشْرَكْتُمْ وَلَا تَخَافُونَ أَنَّكُمْ أَشْرَكْتُم بِاللّهِ مَا لَمْ يُنَزِّلْ بِهِ عَلَيْكُمْ سُلْطَانًافَأَيُّ الْفَرِيقَيْنِ أَحَقُّ بِالَامْنِAnd how should I fear those whom you associate in worship with Allah (though they can neither benefit nor harm, while you fear not that you have joined in worship with Allah things for which He has not sent down to you any Sultan. (So) which of the two parties has more right to be in security! Allah has testified Ibrahim's statement and affirmed security and guidance, saying;الَّذِينَ امَنُواْ وَلَمْ يَلْبِسُواْ إِيمَانَهُم بِظُلْمٍ أُوْلَـيِكَ لَهُمُ الَامْنُ وَهُم مُّهْتَدُونَIt is those who believe and confuse not their belief with Zulm, for them there is security and they are the guided.Allah said,وَتِلْكَ حُجَّتُنَا اتَيْنَاهَا إِبْرَاهِيمَ عَلَى قَوْمِهِ نَرْفَعُ دَرَجَاتٍ مَّن نَّشَاءAnd that was Our proof which We gave Ibrahim against his people. We raise in degrees whom We will. And;إِنَّ رَبَّكَ حَكِيمٌ عَلِيمٌCertainly your Lord is All-Wise, All-Knowing.He is All-Wise in His statements and actions, All-Knower of those whom He guides or misguides, and whether the proof was established against them or not.Allah also said,إِنَّ الَّذِينَ حَقَّتْ عَلَيْهِمْ كَلِمَةُ رَبِّكَ لَا يُوْمِنُونَوَلَوْ جَأءَتْهُمْ كُلُّ ءايَةٍ حَتَّى يَرَوُاْ الْعَذَابَ الاٌّلِيمَ Truly! Those, against whom the Word (wrath) of your Lord has been justified, will not believe. Even if every sign should come to them -- until they see the painful torment. (10:96-97)This is why Allah said here, إِنَّ رَبَّكَ حَكِيمٌ عَلِيمٌ Certainly your Lord is All-Wise, All-Knowing