By a prophet or priest of the Temple. There is a very specific manner in which the Kings of the Davidic line are anointed and hence "crowned" King.
The Magi? No. they are not qualified. Pilate? No. And all the narrative of the NT does not make it so.
According to G-ds word (from Messiah truth):
"According to the Hebrew Bible, the men who were selected to fill the positions of the high priest [ (ha'kohen ha'gadol)] and king [ (melech)] had to go through a ritual anointing ceremony."
King Saul: Saul was anointed as King of Israel when the prophet Samuel poured the special oil on his head:
1 Samuel 10:1 - And Samuel took the vial of oil, and poured it on his [Saul's] head, and kissed him. And he [Samuel] said, "Indeed, the L-rd has anointed you to be a ruler over His inheritance."
King David : David, the son of Jesse, was anointed as King of Israel when the prophet Samuel poured the special oil on his head:
1 Samuel 16:13 - And Samuel took the horn of oil, and anointed him [David] in the midst of his brothers. And a spirit of the L-rd passed over David from that day forth, and Samuel arose and went to Ramah.
King Solomon: This is who anointed Solomon to be King of Israel, and how it was done:
1 Kings 1:34,39,45 - (34) And Zadok the [high] priest and Nathan the prophet shall anoint him [Solomon] there as king over Israel, and blow the horn and say, "[Long] live King Solomon."
(39) And Zadok the [High] Priest took the horn of oil from the Tabernacle [the Sanctuary] and anointed Solomon, and they blew the shofar [ram's horn], and all the people said, "Long live king Solomon."
(45) And Zadok the [high] priest and Nathan the prophet anointed him [Solomon] king in Gihon, and they came up from there rejoicing, and (therefore) the city was in an uproar; that is the noise you were hearing.
The Biblical accounts of the anointing of the first three kings of Israel, Saul, David, and Solomon, contain the necessary elements for the construction of a template for the process of anointing royalty of Israel, one of which will be the promised Jewish Messiah. According to the Hebrew Bible, these elements are:
[1] A special preparation from pure olive oil was used as the oil of anointing. [2] Being sacred, the anointing oil was stored in the Temple. [3] A universally recognized prophet performed the ritual of anointing a king. [4] The prophets used the vial of oil, or the horn of oil, to anoint the new king, not merely a vial of oil or a horn of oil. [5] The oil of anointing was poured only on the head. [6] Anointing was tantamount to crowning a king (or appointing a high priest).
Jesus was never anointed by a prophet. He was never anointed with oil from the temple. He never sat on the throne of David.
Jesus only had spikenard (not the temple oil), which is a purfume ointment, applied to his feet and head by Mary of Bethany (not a prophet) and from an alabaster box (not a horn of oil).
In NO way was Jesus properly anointed King of Israel. Various people saying it in the NT does not make it so.
“In NO way was Jesus properly anointed King of Israel. Various people saying it in the NT does not make it so.”
So when Jesus is one of the various people, applying the term King of kings to himself in Revelation, you treat that how?