The chief ruler: there were several rulers in a synagogue, which we find frequent mention of, as Matthew 9:18 Mark 5:22. Their office and place was, to advise and give order about the affairs of the synagogue, that all things might be performed according to their prescribed rules. Many of the Corinthians believed; amongst whom are reckoned Gaius, Sosthenes, 1 Corinthians 1:1, and Epenetus, Romans 16:5.
Related Commentaries of Acts 18:8
Acts 18:8
8 And Crispus, the chief ruler of the synagogue, believed on the Lord with all his house; and many of the Corinthians hearing believed, and were baptized.