Understand Arabic and Quran

إِنَّ ٱلَّذِينَ قَالُواْ رَبُّنَا ٱللَّهُ ثُمَّ ٱسۡتَقَٰمُواْ تَتَنَزَّلُ عَلَيۡهِمُ ٱلۡمَلَٰٓئِكَةُ أَلَّا تَخَافُواْ وَلَا تَحۡزَنُواْ وَأَبۡشِرُواْ بِٱلۡجَنَّةِ ٱلَّتِي كُنتُمۡ تُوعَدُونَ (30)
Indeed, those who have said, "Our Lord is Allah " and then remained on a right course - the angels will descend upon them, [saying], "Do not fear and do not grieve but receive good tidings of Paradise, which you were promised. (30)
سورة فصلت

The Messenger of Allah (ﷺ) said, "Among the best of your days is Friday. On that day pray to Allah to exalt my mention frequently, for your such supplications are presented to me."

[Abu Dawud].

۞نَبِّئۡ عِبَادِيٓ أَنِّيٓ أَنَا ٱلۡغَفُورُ ٱلرَّحِيمُ (49)
[O Muhammad], inform My servants that it is
I who am the Forgiving, the Merciful. (49)
وَأَنَّ عَذَابِي هُوَ ٱلۡعَذَابُ ٱلۡأَلِيمُ (50)
And that it is My punishment which is the painful punishment. (50)
سورة الحجر

إِنَّ ٱللَّهَ وَمَلَٰٓئِكَتَهُۥ يُصَلُّونَ عَلَى ٱلنَّبِيِّۚ يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ صَلُّواْ عَلَيۡهِ وَسَلِّمُواْ تَسۡلِيمًا (56)
Indeed, Allah confers blessing upon the Prophet, and His angels [ask Him to do so]. O you who have believed, ask [Allah to confer] blessing upon him and ask [Allah to grant him] peace. (56)
سورة الأحزاب

the pillars of Imān (faith):
1. Belief in Allah Almighty
2. Belief in His angels
3. Belief in His books
4. Belief in His messengers
5. Belief in the Last Day
6. Belief in destiny, with the pleasant and
unpleasant aspects thereof

وَمَآ أَرۡسَلۡنَٰكَ إِلَّا رَحۡمَةٗ لِّلۡعَٰلَمِينَ 107
And We have not sent you, [O Muhammad], except as a mercy to the worlds. (107)
سورة الأنبياء

قُلۡ هُوَ ٱللَّهُ أَحَدٌ
Say, "He is Allah, [who is] One,
سورة الإخلاص

On the authority of Abu Hurayrah (may Allah be pleased with him), who said that the Messenger of Allah (ﷺ) said:
When Allah decreed the Creation He pledged Himself by writing in His book which is laid down with Him: My mercy prevails over my wrath. It was related by Muslim (also by al-Bukhari, an-Nasa'i and Ibn Majah).