According to the timeline, how did the treatment of Christians change over time?

A generation after the death of Christ, Christianity had reached Rome in the form of a sect of Judaism popular among the city's poor and destitute. Members of this religious sect spoke of the coming of a new kingdom and a new king. These views provoked suspicion among the Jewish authorities who rejected the group and fear among the Roman authorities who perceived these sentiments as a threat to the Empire.

In the summer of 64 CE, Rome suffered a terrible fire that burned for six days and seven nights consuming almost three quarters of the city. Nero, the emperor of Rome at the time, scapegoated Christians for the fire.

From 60s to 300 CE Christian martyr tag was given to those who was killed for following Christianity, through stoning, crucifixion, burning at the stake or other forms of torture and capital punishment.

Early Christians martyrs were venerated, or regarded with great respect, and seen as both powerful leaders and examples.

From 300 CE onwards: The emperor Constantine I converted to Christianity in 312. In 313, Emperor Constantine outlawed religious persecution in the Roman empire. The edict granted all persons freedom to worship whatever deity they pleased. It also promised Christians legal rights and the right to organize churches.

Edict of Thessalonica: Emperor Theodosius I made Christianity the state church of the Roman Empire and made it the Empire's sole authorized religion.

So,the Christianity and christians who became scapegoat for all wrongs in Rome, by 300 CE onwards they were more accepted and regarded with great respect.

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