meeting of elders were common among Jewish People back then.
Job 29:7
“Those were the days when I went to the city gate and sat in the public
meeting of the
elders.
Acts 15:6 Then the apostles and the elders gathered to study this problem.
Acts 16:4 Then Paul and those with him traveled through other cities. They gave the believers the rules and decisions from the apostles and elders in Jerusalem. They told them to obey these rules.
Acts 21:18 The next day Paul went with us to visit James, and all the elders were there.
1 Timothy 5:17 [ More About Elders and Other Matters ] The elders who lead the church in a good way should receive double honor—in particular, those who do the work of counseling and teaching.
1 Peter 5:5 Young people, I have something to say to you too. You should accept the authority of the elders. You should all have a humble attitude in dealing with each other. “God is against the proud, but he is kind to the humble.”