'Priest's' in the Bible

And, behold, one of them which were with Jesus stretched out his hand, and drew his sword, and struck a servant of the high priest's, and smote off his ear.

But Peter followed him afar off unto the high priest's palace, and went in, and sat with the servants, to see the end.

And it came to pass, that while he executed the priest's office before God in the order of his course,

According to the custom of the priest's office, his lot was to burn incense when he went into the temple of the Lord.

Then took they him, and led him, and brought him into the high priest's house. And Peter followed afar off.

Then Simon Peter having a sword drew it, and smote the high priest's servant, and cut off his right ear. The servant's name was Malchus.