Second: The relationship of Angels with Humans..
Man is the creature for whom Allah has subdued what is in the entire universe.
" أَلَمْ تَرَوْا أَنَّ اللَّهَ سَخَّرَ لَكُم مَّا فِي السَّمَاوَاتِ وَمَا فِي الْأَرْضِ " .سورة لقمان / آية : 20 .
"Do you not see that Allāh has made subject to you whatever is in the heavens and whatever is in the earth".
Angels protect heavens and earth and this helps Man to do what he is ordered.. Angels have many jobs in Man's life.
Here are some examples but not all things..
Angels descend with messages to the prophets.
The angels are the ones chosen by Allah to convey His guidance to the people of the earth through His honorable Messengers..Jibrîl is the chosen Angel for this mission.
قال تعالى "وَإِنَّهُ لَتَنزِيلُ رَبِّ الْعَالَمِينَ *نَزَلَ بِهِ الرُّوحُ الْأَمِينُ * عَلَى قَلْبِكَ لِتَكُونَ مِنَ الْمُنذِرِينَ *بِلِسَانٍ عَرَبِيٍّ مُّبِينٍ " .سورة الشعراء / آية : 192 ـ 195 .
"The Trustworthy Spirit [i.e., Gabriel] has brought it down
Upon your heart, [O Muḥammad] - that you may be of the warners, in a clear Arabic language."
Angels entrusted with protecting Man and writing his deeds..
قال تعالى "وَإِنَّ عَلَيْكُمْ لَحَافِظِينَ * كِرَامًا كَاتِبِينَ* يَعْلَمُونَ مَا تَفْعَلُونَ" .سورة الانفطار / آية : 10 ـ 12 .
"And indeed, [appointed] over you are keepers, Noble and recording".
وقال تعالى " مَّا يَلْفِظُ مِن قَوْلٍ إِلَّا لَدَيْهِ رَقِيبٌ عَتِيدٌ " .سورة ق / آية : 18 .
"He [i.e., man] utters no word except that with him is an observer prepared to record".
Angels who write the deeds if the sick..
Abdullah Ibn Amr Ibn Al Aas said:
The prophet, peace be upon him, said: “If a servant is in a good way of worship and then falls ill, it is said to the angel entrusted with him: Write for him the like of his work if he is well, till I cure him. Narrated by him.
There's also an angel standing to the right of the worshiper.
Abi Hurairah narrated that the prophet said:
"إذَا قَامَ أحَدُكُمْ إلى الصَّلَاةِ، فلا يَبْصُقْ أمَامَهُ، فإنَّما يُنَاجِي اللَّهَ ما دَامَ في مُصَلَّاهُ، ولَا عن يَمِينِهِ، فإنَّ عن يَمِينِهِ مَلَكًا، ولْيَبْصُقْ عن يَسَارِهِ، أوْ تَحْتَ قَدَمِهِ، فَيَدْفِنُهَا. "
"If one of you gets up to pray, he does not spit in front of him, for he is conversing with Allah as long as he is in his place of prayer, nor on his right, for there is an angel on his right, and he should spit on his left or under his feet and bury it.”..Fath Al Barri.
The Angel Banner..
Abi Hurairah narrated that the prophet said:
عن أبي هريرة ـ رضي الله عنه ـ عن النبي ـ صلى الله عليه وسلم ـ قال "ما من خارجٍ يخرُجُ - يعني من بيتِهِ - إلَّا - ببابِهِ - رايتانِ: رايةٌ بيدِ ملَكٍ، ورايةٌ بيدِ شيطانٍ، فإن خرجَ لما يحبُّ اللَّهُ عزَّ وجلَّ، اتَّبعَهُ الملَكُ برايتِهِ، فلم يَزَلْ تحتَ رايةِ الملَكِ حتَّى يرجعَ إلى بيتِهِ، وإن خرجَ لما يسخطُ اللَّهَ، اتَّبعَهُ الشَّيطانُ بِرايتِهِ، فلم يزَلْ تحتَ رايةِ الشَّيطانِ، حتَّى يرجِعَ إلى بيتِهِ"
"No one goes out - that is, from his house - except that he has two banners in his hand:
A banner is in the hand of an angel, and a banner is in the hand of Satan. If he goes out when he loves Allah, the Mighty and Sublime, the angel will follow him with his banner. And if he goes out when Allah is angry, Satan will follow him with his banner. He remains under the banner of the Angel until he returns to his house."
Narrated by Ahmed.
And there is an Angel entrusted with the womb:
Anas bin Malik, may God be pleased with him, narrated that the Prophet, peace be upon him, said:
عن أنس بن مالك ـ رضي الله عنه ـ عن النبي ـ صلى الله عليه وسلم ـ قال"إنَّ اللَّهَ عزَّ وجلَّ وكَّلَ بالرَّحِمِ مَلَكًا، يقولُ: يا رَبِّ نُطْفَةٌ؟ يا رَبِّ عَلَقَةٌ؟ يا رَبِّ مُضْغَةٌ؟ فإذا أرادَ أنْ يَقْضِيَ خَلْقَهُ قالَ: أذَكَرٌ أمْ أُنْثَى، شَقِيٌّ أمْ سَعِيدٌ، فَما الرِّزْقُ والأجَلُ، فيُكْتَبُ في بَطْنِ أُمِّهِ."
“Allah, the Mighty and Sublime, has appointed an angel in the womb. He says: ‘Lord, a leech, Lord, a lump of flesh’. If he wants to fulfill his creation, he says: Male or female? Naughty or happy? What is the provision and term? So he writes in his mother’s womb." Al Bukhari.
Angels supplicate to the one who visit the sick person..
"ما مِنَ امرئٍ مسلمٍ يَعُودُ مسلمًا إلَّا ابْتَعَثَ اللهُ سبعينَ ألفَ مَلَكٍ يُصَلُّونَ عليهِ في أَيِّ ساعَاتِ النَّهارِ حتى يُمْسِى وفي أَيِّ ساعَاتِ الليلِ حتى يُصبحَ "
Ali Ibn Abi Talib narrated that the prophet, peace be upon him, said:
"When the Muslim visits a sick one, Allah sends seventy thousand angels to pray for him at what hours of the day until evening, and what hours of night it is until morning.” Sahih Al Gamee.
The Angel says Ameen when a Muslim performs supplication for his brother in the unseen..
قَدِمْتُ الشَّامَ، فأتَيْتُ أَبَا الدَّرْدَاءِ في مَنْزِلِهِ، فَلَمْ أَجِدْهُ وَوَجَدْتُ أُمَّ الدَّرْدَاءِ، فَقالَتْ: أَتُرِيدُ الحَجَّ العَامَ، فَقُلتُ: نَعَمْ، قالَتْ: فَادْعُ اللَّهَ لَنَا بخَيْرٍ، فإنَّ النبيَّ صَلَّى اللَّهُ عليه وَسَلَّمَ كانَ يقولُ: دَعْوَةُ المَرْءِ المُسْلِمِ لأَخِيهِ بظَهْرِ الغَيْبِ مُسْتَجَابَةٌ، عِنْدَ رَأْسِهِ مَلَكٌ مُوَكَّلٌ كُلَّما دَعَا لأَخِيهِ بخَيْرٍ، قالَ المَلَكُ المُوَكَّلُ بهِ: آمِينَ وَلَكَ بمِثْلٍ"
Safwan the son of Abdullah Ibn Safwan, who was married to Al Darda' narrated:
"I visited Abu Darda's house in Syria. I did not find him there but Umm Darda' (was present at the house). She said: Do you intend to perform Hajj during this year? I said: Yes. She said: Do supplicate Allah for blessings upon us, for Allah's prophet (may peace be upon hiin) used to say: The supplication of a Muslim for his brother at his back (in his absence) is responded so long as he makes a supplica- tion for blessings for his brother and the commissioned Angel says: Amen, and says: May it be for you too. I went to the bazar and met Abi Dardi' and he narrated like this from Allah's prophet ". Moslem.
Angels prayers for those who teach people the good..
" إنَّ اللهَ و ملائكتَه ، حتى النملةَ في جُحْرِها ، و حتى الحوتَ في البحرِ ، لَيُصلُّون على مُعَلِّمِ الناسِ الخيرَ "
The prophet said:
"Allah and his angels, even the ant in its hole and even the whale in the sea, pray for the one who teaches people good".Tabarani and Atermizi.
These are examples for the role of Angels, if anyone needs to know more, he has to read