بِسْمِ اللهِ الرَّحْمٰنِ الرَّحِيْم
وَاللَّهُ يَعْلَمُ مَا تُسِرُّونَ وَمَا تُعْلِنُونَ
And Allah knows what you conceal and what you declare. (Surat An-Nahl: 19)
Allah is the One whose knowledge is comprehensive and extends to everything seen and unseen, apparent and hidden. Nothing whatsoever is hidden from Him. He knows what was in the past, what is in the present, and what will be in the future.
وَإِذْ قَالَ رَبُّكَ لِلْمَلائِكَةِ إِنِّي جَاعِلٌ فِي الأرْضِ خَلِيفَةً قَالُوا أَتَجْعَلُ فِيهَا مَنْ يُفْسِدُ فِيهَا وَيَسْفِكُ الدِّمَاءَ وَنَحْنُ نُسَبِّحُ بِحَمْدِكَ وَنُقَدِّسُ لَكَ قَالَ إِنِّي أَعْلَمُ مَا لَا تَعْلَمُونَ
And [mention, O Muhammad], when your Lord said to the angels, “Indeed, I will make upon the earth a successive authority.” They said, “Will You place upon it one who causes corruption therein and sheds blood, while we declare Your praise and sanctify You?” Allah said, “Indeed, I know that which you do not know.” (Surat Al-Baqarah: 30)
One example of the abundance wisdom of Allah’s could be seen in the story of Adam. At that time the angels who ask Allah the reason of the creation of Adam. Whether he (Adam) and his descendant would create rampage and bloodshed on earth such as creatures previously created (the jinns).
One interpretation of the creature created before mankind came from Ibnu Abbas. He stated that those creature are jinns. They create damage on earth until finally God sent Satan and the angels to destroy them. Such terrible destruction that befell the nation of jinn drove them to remote and lonely places such as the sea, island, mountain, or forest.
After the destruction of the jinns, Allah created new creature to replace the Jinns, namely humans. And with the wisdom of His, Allah predestined that there will be prophets and messengers from the side of mankind; to prevent them repeating the act of the Jinns. And these prophets and apostles will straighten people when they begin to deviate from the path of Allah. This is one example of the vast knowledge of Allah. Even the angels who are close to Him do not know anything except that He explained to them. So it is impossible if someone claimed that he or herself know better than God.