In Hebrews 13:17 we are told:
Obey your prelates (bishops) and submit to them, for they are keeping watch over your souls and will give an account. Let them do this with joy and not with sighing for that would be harmful to you
Here is a good article:
Where in the New Testament are “priests” mentioned?
catholic.com/quickquestions/where-in-the-new-testament-are-priests-mentioned
"The English word “priest” is derived from the Greek word presbuteros, which is commonly rendered into Bible English as “elder” or “presbyter.” The ministry of Catholic priests is that of the presbyters mentioned in the New Testament (Acts 15:6, 23). The Bible says little about the duties of presbyters, but it does reveal they functioned in a priestly capacity. …
They were ordained by the laying on of hands (1 Tm 4:14, 5:22), they preached and taught the flock (1 Tm 5:17), and they administered sacraments (Jas 5:13-15). These are the essential functions of the priestly office, so wherever the various forms of presbuteros appear–except, of course, in instances which pertain to the Jewish elders (Mt 21:23, Acts 4:23)–the word may rightly be translated as “priest” instead of “elder” or “presbyter.”
Episcopos arises from two words, epi (over) and skopeo (to see), and it means literally “an overseer”: We translate it as “bishop.” The King James Version renders the office of overseer, episkopen, as “bishopric” (Acts 1:20). The role of the episcopos is not clearly defined in the New Testament, but by the beginning of the second century it had obtained a fixed meaning. There is early evidence of this refinement in ecclesiastical nomenclature in the writings of Ignatius of Antioch (d. A.D. 107), who wrote at length of the authority of bishops as distinct from presbyters and deacons (Epistle to the Magnesians 6:1, 13:1-2; Epistle to the Trallians 2:1-3; Epistle to the Smyrnaeans 8:1-2).
The New Testament tendency to use episcopos and presbuteros interchangeably is similar to the contemporary Protestant use of the term “minister” to denote various offices, both ordained and unordained (senior minister, music minister, youth minister). Similarly, the term diakonos is rendered both as “deacon” and as “minister” in the Bible, yet in Protestant churches the office of deacon is clearly distinguished from and subordinate to the office of minister. …
There is more to be read as this is just an excerpt.
blessings,
CEM