chief ruler, X own, priest, prince, principal officer

“Officer” From Concise Bible Dictionary:

This word is used in scripture indefinitely for any one in authority, there being seven Hebrew words so translated. In the New Testament are
1. πράκτωρ, from “to do or act,” it occurs only in Luke 12:58. It is used for the officer appointed to exact the money adjudicated by the judge.
2. ὑπηρἐτης, literally “an under-rower,” a subordinate officer, who assisted the priests and the Roman governors (Matt. 5:25; John 7:32,45-46; John 18:3-22; John 19:6; Acts 5:22,26). It is also translated “minister” and “servant.”

“Priest, Priesthood” From Concise Bible Dictionary:

It is remarkable that the first priest spoken of in scripture is Melchizedek: he is said to be “priest of the most high God.” Nothing is said of his offering sacrifices, but he brought forth bread and wine, and blessed Abraham (Gen. 14:18-19). He is a type of Christ, who is constituted a “priest after the order of Melchizedek,” and who will come forth to bless His people in the future. See MELCHIZEDEK.
Before the institution of the Levitical priesthood, Israel had been redeemed out of Egypt. The object of priesthood was not therefore to bring them into redemption, but to maintain their position based on redemption before God. At first it was said that they should all be priests (Ex. 19:6), but law afterward came in, and the service of priesthood was very definitely confined to the house of Aaron. The names of the twelve tribes were engraved on the breastplate and on the plates on the priest’s shoulders: whenever he went in to the presence of God, the people were thus represented. So Christ is the great High Priest at the right hand of God, not for the world, but for His saints: “We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens” (Heb. 8:1). He represents His saints there, and in virtue of His presence there, and of His experience here, He is able to sympathize with them in trial and to succor them in temptation.
The Lord was not nor could be a priest on earth, for He was not of the order of Aaron (Heb. 7:14; Heb. 8:4); but on the cross He offered Himself to God, the antitype of Aaron on the day of atonement. He was really Offering, Priest, and Victim in His own person, and, being perfected, is now the great High Priest above for the Christian (Heb. 4:14-16). See AARONIC PRIESTHOOD.
Christians are priests by calling, as being risen together with Christ, and have access to God: “an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ” (1 Peter 2:5,9; Heb. 10:19; Rev. 1:6).

Strong’s Dictionary of Hebrew Words:

active participle of 3547; literally, one officiating, a priest; also (by courtesy) an acting priest (although a layman)
KJV Usage:
chief ruler, X own, priest, prince, principal officer