Polycarp was a disciple of the Apostle Yochanan. Polycarp lived in the early 2nd century and we still have a few letters of his writing.
But do you know what this DIRECT discple of the Apostle Yochanan believed about Torah observance? Why Polycarp TAUGHT YOU MUST KEEP TORAH.
For example, at this link you will find documented proof and historical evidence that Polycarp insisted believers observe Passover AND NOT THE PAGAN FEAST KNOWN AS EASTER (ISHTAR).
It was only three hundred years later, at the Council of Nicea, that Constantine who hated Jews, officially moved the feast from the biblical Passover of Leviticus 23 to the pagan day of easter.
Go read the historical evidence for yourself.
Now, are you gonna follow a pagan like Constantine, or are you going to follow the example of Polycarp WHO WAS PERSONALLY DISCIPLED BY THE APOSTLE YOCHANAN?????