Ignatius, the third bishop of Antioch, who died in AD 108, wrote:
“If, therefore, those who were brought up in the ancient order of things have come to the possession of a new hope, no longer observing the Sabbath, but living in the observance of the Lord’s Day, on which also our life has sprung up again by Him… Let us therefore no longer keep the Sabbath after the Jewish manner, and rejoice in days of idleness; for “he that does not work, let him not eat.“…let every friend of Christ keep the Lord’s day as a festival, the resurrection-day, the queen and chief of all the days [of the week]” https://en.wikipedia.org/wiki/Epistle_of_Ignatius_to_the_Magnesians
He also wrote:
For if we are still practicing Judaism, we admit that we have not received God’s favor…it is wrong to talk about Jesus Christ and live like Jews. For Christianity did not believe in Judaism, but Judaism in Christianity.
I find it very interesting that Antioch is the place where Christians were first called ‘Christians’ ,we find this in Act 11:26.
and when he found him, he brought him to Antioch. So for a whole year Barnabas and Saul met with the church and taught great numbers of people. The disciples were called Christians first at Antioch. (Act 11:26)
Antioch is at the heart of the separation of the Gentile Christians from the Jewish Christians also know as the Nazarenes, which remained active until the 5th century.