13:36
وَٱلَّذِينَ ءَاتَيْنَـٰهُمُ ٱلْكِتَـٰبَ يَفْرَحُونَ بِمَآ أُنزِلَ إِلَيْكَ ۖ وَمِنَ ٱلْأَحْزَابِ مَن يُنكِرُ بَعْضَهُۥ ۚ قُلْ إِنَّمَآ أُمِرْتُ أَنْ أَعْبُدَ ٱللَّهَ وَلَآ أُشْرِكَ بِهِۦٓ ۚ إِلَيْهِ أَدْعُوا۟ وَإِلَيْهِ مَـَٔابِ
And [the believers among] those to whom We have given the [previous] Scripture rejoice at what has been revealed to you, [O Muhammad], but among the [opposing] factions are those who deny part of it. Say, "I have only been commanded to worship Allah and not associate [anything] with Him. To Him I invite, and to Him is my return."
Context in Surah Ar-Ra'd
Nearby ayahs help place verse 13:36 in sequence and meaning.
لَّهُمْ عَذَابٌ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا ۖ وَلَعَذَابُ ٱلْـَٔاخِرَةِ أَشَقُّ ۖ وَمَا لَهُم مِّنَ ٱللَّهِ مِن وَاقٍ
For them will be punishment in the life of [this] world, and the punishment of the Hereafter is more severe. And they will not have from Allah any protector.
۞ مَّثَلُ ٱلْجَنَّةِ ٱلَّتِى وُعِدَ ٱلْمُتَّقُونَ ۖ تَجْرِى مِن تَحْتِهَا ٱلْأَنْهَـٰرُ ۖ أُكُلُهَا دَآئِمٌ وَظِلُّهَا ۚ تِلْكَ عُقْبَى ٱلَّذِينَ ٱتَّقَوا۟ ۖ وَّعُقْبَى ٱلْكَـٰفِرِينَ ٱلنَّارُ
The example of Paradise, which the righteous have been promised, is [that] beneath it rivers flow. Its fruit is lasting, and its shade. That is the consequence for the righteous, and the consequence for the disbelievers is the Fire.
وَكَذَٰلِكَ أَنزَلْنَـٰهُ حُكْمًا عَرَبِيًّا ۚ وَلَئِنِ ٱتَّبَعْتَ أَهْوَآءَهُم بَعْدَ مَا جَآءَكَ مِنَ ٱلْعِلْمِ مَا لَكَ مِنَ ٱللَّهِ مِن وَلِىٍّ وَلَا وَاقٍ
And thus We have revealed it as an Arabic legislation. And if you should follow their inclinations after what has come to you of knowledge, you would not have against Allah any ally or any protector.
وَلَقَدْ أَرْسَلْنَا رُسُلًا مِّن قَبْلِكَ وَجَعَلْنَا لَهُمْ أَزْوَٰجًا وَذُرِّيَّةً ۚ وَمَا كَانَ لِرَسُولٍ أَن يَأْتِىَ بِـَٔايَةٍ إِلَّا بِإِذْنِ ٱللَّهِ ۗ لِكُلِّ أَجَلٍ كِتَابٌ
And We have already sent messengers before you and assigned to them wives and descendants. And it was not for a messenger to come with a sign except by permission of Allah. For every term is a decree.