high priest, chief priests

Definition:

The term "high priest" refers to a special priest who was appointed to serve for one year as the leader of all the other Israelite priests.

The high priest had special responsibilities. He was the only one who was permitted to go into the most holy part of the temple to offer a special sacrifice once a year.
The Israelites had many priests, but only one high priest at a time.
When Jesus was being arrested, Caiaphas was the official high priest. Caiphas' father-in-law Annas is also mentioned sometimes because he was a former high priest who probably still had power and authority over the people.

"High priest" could be translated as "supreme priest" or "highest ranking priest."
Make sure this term is translated differently from the term "chief priest."

13:08 No one could enter the room behind the curtain except the high priest, because God lived there.
21:07 The Messiah who would come would be the perfect high priest who would offer himself as a perfect sacrifice to God.
38:03 The Jewish leaders, led by the high priest, paid Judas thirty silver coins to betray Jesus.
39:01 The soldiers led Jesus to the house of the high priest in order for the high priest to question him.
39:03 Finally, the high priest looked directly at Jesus and said, "Tell us, are you the Messiah, the Son of the living God?"
44:07 The next day, the Jewish leaders brought Peter and John to the high priest and the other religious leaders.
45:02 So the religious leaders arrested Stephen and brought him to the high priest and the other leaders of the Jews, where more false witnesses lied about Stephen.
46:01 The high priest gave Saul permission to go to the city of Damascus to arrest Christians there and bring them back to Jerusalem.
48:06 Jesus is the Great High Priest. Unlike other priests, he offered himself as the only sacrifice that could to take away the sin of all the people in the world. Jesus was the perfect high priest because he took the punishment for every sin that anyone has ever committed.