“Those who were unjustly expelled from their homes for no other reason than their saying: ‘Allah is Our Lord.’ If Allah were not to repel some men through others, monasteries and churches and synagogues and mosques, wherein the names of Allah is much mentioned, would certainly have been pulled down. Allah will most certainly help those who will help Him. Verily Allah is Immensely Strong, Overwhelmingly Mighty. (Allah will certainly help) those who, were We to bestow authority on them in the land, will establish Prayer, render Zakah, enjoin good, and forbid evil. The end of all matters rests with Allah.” (Al-Qur’ān – 22:40-41)
When power is bestowed on the believers, they concern themselves with such noble tasks like establishing Prayer and giving out Zakah, and use their power to promote goodness and extirpate evil.
It is, in fact, God Who decides to whom governance of a territory should be entrusted. People who are intoxicated with power are prone to misunderstand that it is they who decide the fate of people. But God, Who has the power to transform a tiny seed into a huge tree, and Who conversely, can turn a huge tree into a pile of ashes, also has the power to strike a fatal blow and make an example of those who, by their acts of repression, struck terror into the hearts of people making themselves appear too well entrenched to be removed from power. On the other hand, He can also raise the down-trodden to heights of power that none can dream of.