who is this magi?
The Magi (often translated as "wise men"), but is more accurately astrologers.
Matthew's narrative
the Magi (often translated as "wise men", but more accurately astrologers
who told the magi to follow the star Matthew's account suggests that the Magi knew from the star that the "king of the Jews" had been born before they arrived in Jerusalem
The (Three) Wise Men or (Three) Kings. They were priests in Zoroastrianism and the earlier religions of the western Iranians. Magi were priests in Zoroastrianism and the earlier religions of the western Iranians.
Biblical Magi Magi Magi
Introduction Introduction Introduction
The biblical Magi ( or ; singular: ), also referred to as the (Three) Wise Men or (Three) Kings, were – in the Gospel of Matthew and Christian tradition – distinguished foreigners who visited Jesus after his birth, bearing gifts of gold, frankincense and myrrh.  Magi (; singular magus ; from Latin "magus") were priests in Zoroastrianism and the earlier religions of the western Iranians.  Magi (; singular magus ; from Latin "magus") were priests in Zoroastrianism and the earlier religions of the western Iranians.
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Star of Bethlehem [SEP] Matthew's narrative
In the Gospel of Matthew account, the Magi (often translated as "wise men", but more accurately astrologers) arrive at the court of Herod in Jerusalem and tell the king of a star which signifies the birth of the King of the Jews: Herod is "troubled", not because of the appearance of the star, but because the Magi have told him that a "king of the Jews" had been born, which he understands to refer to the Messiah, a leader of the Jewish people whose coming was believed to be foretold in scripture. So he asks his advisors where the Messiah would be born.