Monasteries, Churches and Synagogues must Be Respected according to the Qur'an
Another important fact we learn from the Qur'an is that Muslims must respect Jewish and Christian places of worship. In the Qur'an, the places of worship of the People of the Book, ie. monasteries, churches and synagogues, are mentioned as places of worship protected by God.
... if God had not driven some people back by means of others, monasteries, churches, synagogues and mosques, where God's name is mentioned much, would have been pulled down and destroyed. God will certainly help those who help Him – God is All-Strong, Almighty. (Qur'an, 22:40)
This verse shows every Muslim the importance of respecting and protecting the holy places of the People of the Book.
Indeed, the Prophet Muhammad (pbuh) also made contracts with pagans as well as the People of the Book. Pagans were always treated with justice, and when they asked to be taken under protection, their requests were readily accepted by the Prophet (pbuh). This meant that these communities sought the protection of the Messenger of God (pbuh) in the face of an attack or a wrongful accusation. Throughout his life, many non-Muslims and pagans requested protection from the Prophet Muhammad (pbuh), and he took them under his protection and ensured their security. In the Qur'an God advises that requests of pagans seeking protection be accepted by believers. Of this, God says the following:
If any of the idolaters ask you for protection, give them protection until they have heard the words of God. Then convey them to a place where they are safe... (Qur'an, 9:6)
Jews and Christians, due to their shared commonalities with Muslims are much closer to Muslims than those who have no faith in God. Each of these religions has its book, that is, they are subject to a book sent down by God. They know what is right and what is wrong, what is lawful and what is unlawful according to their scriptures, and all revere the prophets and messengers that accompanied them. They all believe in a hereafter, and afterlife where they will have to give an account to God for all their actions. So, there is a shared foundation from where we all can unite upon.
Mosques, churches and synagogues are special places of prayer where the name of God is revered. In the Qur'an, God says that all these sanctuaries must be respected and preserved.