ANSWER: Romans and Early Christians had growing tensions for multiple reasons, but mainly for religious purposes (duh). Christians threatened Roman beliefs as they became vast in Roman territory an began to control the population. The Romans did not like this, and began to execute anyone who was Christian, even extending the religion to be illegal.
-Despite the harsh conditions, Christians were still able to find their way of spreading and growing throughout all of Rome, lololol
-ironically because if the illegalization of Christianity, Their boi Jesus helped.
Hope this Helps!