When did Christians start celebrating Christmas?

Answer 1

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It is thought that the early Christians did not widely celebrate the birth of Jesus. This is most likely true since the primary focus was on His life, crucifixion, and particularly His resurrection. There certainly were some early celebrations. Early writings including a "feast calendar" written in 243AD indicate that there were some celebrations in the third century and perhaps in the second century. Christmas celebrations did not gain widespread prominence however until the Middle Ages or starting from around 400AD.

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The earliest celebrations of Christ's birth, that are known, were mentioned around 200AD. So celebrations are likely to have occurred in the second century. However, celebrating Christ's birth was not seen as highly important in those days. Many rejected the idea of a birthday celebration altogether. The prime focus was on Christ's life, crucifixion and resurrection. The December 25th date was observed as early as the third century and became more accepted throughout the fourth century as the Roman Empire converted to Christianity.

when christ was born (son of God)