There is a rather theological backing as to how and why the Christianity faith has spread far and wide in a relatively short period, particularly in the case of how Christianity took over the Roman Empire.
Establishing social networks
Historical facts indicate that the religious talks and conversations would take place through simple gestures and bonds such as forming a casual and social network. For a better understanding of the picture, imagine conversations about the faith among believers. Such discussions are bound to induce a sense of personal attachment, driven by the belief of religion and are bound to make a difference in the minds of individuals. With time, such social networks have worked their way up among circles to spread the word of Christianity faith.
Caring for the unwanted
During such times, there were unspeakable acts of violence being carried out, discrimination against orphans, widows and sick along with the spread of riots, viral diseases such as plague, fires, and other disasters. At these times of emergency, people would instead flee from their home without bearing any sympathy for their fellow neighbor. Believers of Christ, on the other hand, believed it was wrong to flee for their lives and let fellow brothers and sisters rot there. This is what distinguished Christians as during such frequent disasters, they lend a helping hand to everyone and anyone, regardless whether they are disabled, below status, sick or enemy. Such helping acts portrayed a strong message to people of solidarity, kindness, and hope. Simple gestures such as providing aid through food, water and care helped improve survival rates when mortality rate was high.
The stance against abortion, adultery, and infanticide
Christians had a rather strong position against such practices taking place in the Roman Empire. Historical texts confirm that the times of the Empire were particularly hard on women and children and lenient towards men. Men were free to practice acts of adultery when married. Children of such unfaithful relationships were either left to die after birth or aborted. Christians spoke against such practices and exclaimed the teachings of God, such as being faithful to only one partner, secure with marriage. Christians would not sideline such unwanted children; they would take them and raise them according to Christian faiths and love them as if they were their own children. Such beliefs of kindness and justice impacted such harmful practices and changed the mentality of many during such hard-minded times.
Specific Christian theological beliefs backed all the brave, kind and loving actions displayed by Christians. The most critical belief every Christian instilled in their mind is to love God, means loving your fellow man. Such positive and radical beliefs changed how people think, as they began to portray acts of kindness and love and with no time, was soon adopted by the majority of the Empire and western civilization.