Prophet Muhammad ﷺ stated: "Angels come to you in succession by night and day. Those who have passed the night with you ascend and Allah asks them, though He knows everything: "In what state did you leave my slaves?" They reply: "When we left them they were praying and when we reached them, they were praying." Actions of an entire nation is presented before Allah ﷻ, Who decides their destiny whether fortunate or unfortunate and if decisions made for them implemented immediately or gradually.
Prayers of the highest & lowest levels of angels intercede in the court of Allah ﷻ for our forgiveness and mercy in this world and hereafter: "Our Lord, You embrace all things in mercy and knowledge, so forgive those who turn to You and follow Your path. Save them from the pains of Hell and admit them, Lord, to the lasting Gardens You have promised to them, together with their righteous ancestors, spouses, and offspring: You alone are the Almighty, the All Wise." Lowest heavenly angels pray for righteous and against sinners which influence in deciding matters for humans: “Every day two angels come down from heaven and one of them says, ‘O Allah! Compensate every person who spends in Your Cause,’ the other says, ‘O Allah! Destroy every miser’.”
Once Allah ﷻ makes decisions, angels act in accordance to His demands and carry out actions on earth inspiring hearts of humans and other creation to make things happen in accordance to what has been decreed: “….when our Lord ﷻ decrees a matter, He is glorified by the bearers of the Throne (the highest council of angels). Then the inhabitants who are below them, then those below them, until such glorification reaches this (earthly) heaven glorify him...then the inhabitants of each heaven seek the information, until the news is conveyed to the inhabitants of the heavens of the earth.” The decision may be punishment such as natural disasters, infighting that has been decreed for a nation, and then angels inspire their hearts with hatred, which may last as long as Allah ﷻ wills. The infighting could also be a source of mercy in the form of a trial for the good ones to defeat the rebellious for sake of justice and so on. This process is similar to a hadith which explains how love or hatred is generated in the human hearts among each other: "When Allah loves a slave, He calls Gabriel and says: 'I love so-and-so; so love him.' And then Jibril loves him. Then he (Jibril) announces in the heavens... then the inhabitants of the heavens (the angels) also love him; and then people on earth love him. And when Allah hates a slave, He calls Gabriel and says: 'I hate so- and-so, so hate him.' Then Jibril also hates him. He (Jibril) then announces amongst the inhabitants of heavens... Thus they also start to hate him. Then he becomes the object of hatred on the earth also."
The divine decisions may take effect immediately or years to materialize, depending on how and what Allah decides and He is Almighty All Wise: "He governs from the heaven to the earth and then the record (of this governance) goes up to Him in a day whose measure is a thousand years in your reckoning." Maulana Maududi in his Tafheem comments on this verse: "Allah’s decrees are not passed and enforced in the history of mankind according to the earthly watches and calendars. When a nation is warned that if it adopted such and such an attitude in life, it would meet with such and such an end, the people would be foolish if from this they understood that the predicted consequences would follow their evil acts and deeds immediately. Not to speak of days and months and years, the occurrence of the results may even take centuries."
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