Do they not see the birds above them with wings outspread and [sometimes] folded in? None holds them [aloft] except the Most Merciful. Indeed He is, of all things, Seeing.
How can You feel Secure against the Punishment of Allah while He is Able to seize You however He wil
This is another indication of His gentleness and His mercy with His creatures. He is able to punish them because some of them disbelieve in Him and worship others besides Him, yet He is forbearing, He pardons, and He gives respite for an appointed time without hastening. This is as He says,
(And if Allah were to punish men for that which they earned, He would not leave a moving creature on the surface of the earth; but He gives them respite to an appointed term: and when their term comes, then verily, Allah is Ever All-Seer of His servants.) 35:45 Here Allah says,
أَوَلَمْ يَرَوْا إِلَى الطَّيْرِ فَوْقَهُمْ صَافَّاتٍ وَيَقْبِضْنَ ۚ مَا يُمْسِكُهُنَّ إِلَّا الرَّحْمَـٰنُ ۚ إِنَّهُ بِكُلِّ شَيْءٍ بَصِيرٌ (Have they not looked to the birds above them spreading their wings, and (at times) they fold (them) in? No one holds them up except the Rahman (the All-Merciful). Surely He is watchful of every thing...67:19)
This verse invites attention to the fact that the birds have weight, and in terms of the law of gravity, weighty bodies should fall down on the earth, if they are released from above. Normally, it is not possible for the air to hold them up. But Allah, through His consummate power, has created these birds in such a way that they can hold themselves up in the air. Apparently, they have no intellect, but Allah has taught them the art to make the air carry their burden and to fly in it by maneuvering their wings in such a way that at times they outspread them and at other times they fold them back. In this way they subjugate the air to their benefit. It is obvious that enabling air to hold them up, designing the wings of the birds on this particular shape and teaching them the art of controlling the air, all these functions were possible only by Allah's Supreme Creative Power.
Thus far the conditions of various categories and species of existent beings were analysed and considered in order to provide evidence of Divine existence, His Oneness, His unique knowledge and power. If a fair-minded person were to consider them carefully, he will have no choice but to believe in Allah. From the next verse up to the end of the Surah, the non-believers and the unrighteous people of all categories are warned of the Divine scourge. First, they are admonished that if Allah decides to punish any nation, there is no power in the world that can stop Him. There is no fighting force or army of soldiers that can come to the support of the disbelievers and save them. Thus the next verse says:
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 14–20
Everything on earth is extremely well-balanced. It is this balance which has made the earth habitable for human beings. Should the slightest disturbance ever occur in this balance, man’s life would be destroyed. We should be grateful to God for the balanced world provided to us and seek His gracious help against any destructive conditions that may develop as a result of the world’s equilibrium being upset.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.