(and instruct them in the Book) meaning, Al-Qur'an,
(and Al-Hikmah) meaning, the Sunnah, as Al-Hasan, Qatadah, Muqatil bin Hayyan and Abu Malik asserted. It was also said that `Al-Hikmah', means `comprehension in the religion', and both meanings are correct. `Ali bin Abi Talhah said, that Ibn `Abbas said that,
(and purify them) means, "With the obedience of Allah.''
﴿إِنَّكَ أَنتَ العَزِيزُ الحَكِيمُ﴾
(Verily, You are the Mighty, the Wise).
This Ayah stated that Allah is able to do anything, and nothing escapes His ability. He is Wise in His decisions, His actions, and He puts everything in its rightful place due to His perfect knowledge, wisdom and justice.
﴿وَمَن يَرْغَبُ عَن مِّلَّةِ إِبْرَهِيمَ إِلاَّ مَن سَفِهَ نَفْسَهُ وَلَقَدِ اصْطَفَيْنَـهُ فِي الدُّنْيَا وَإِنَّهُ فِى الاٌّخِرَةِ لَمِنَ الصَّـلِحِينَ - إِذْ قَالَ لَهُ رَبُّهُ أَسْلِمْ قَالَ أَسْلَمْتُ لِرَبِّ الْعَـلَمِينَ - وَوَصَّى بِهَآ إِبْرَهِيمُ بَنِيهِ وَيَعْقُوبُ يَـبَنِىَّ إِنَّ اللَّهَ اصْطَفَى لَكُمُ الدِّينَ فَلاَ تَمُوتُنَّ إَلاَّ وَأَنتُم مُّسْلِمُونَ ﴾
(130. And who turns away from the religion of Ibrahim (i.e. Islamic Monotheism) except him who fools himself Truly, We chose him in this world and verily, in the Hereafter he will be among the righteous). (131. When his Lord said to him, "Submit (i.e. be a Muslim)!'' He said, "I have submitted myself (as a Muslim) to the Lord of the `Alamin (mankind, Jinn and all that exists).'') (132. And this (submission to Allah, Islam) was enjoined by Ibrahim (Abraham) upon his sons and by Ya`qub (Jacob) (saying), "O my sons! Allah has chosen for you the (true) religion, then die not except as Muslims.'')