Now a Jew named Apollos, a native of Alexandria, came to Ephesus. He was an eloquent man, competent in the Scriptures. He had been instructed in the way of the Lord. And being fervent in spirit, he spoke and taught accurately the things concerning Jesus, though he knew only the baptism of John. He began to speak boldly in the synagogue, but when Priscilla and Aquila heard him, they took him and explained to him the way of God more accurately. And when he wished to cross to Achaia, the brothers encouraged him and wrote to the disciples to welcome him. When he arrived, he greatly helped those who through grace had believed, for he powerfully refuted the Jews in public, showing by the Scriptures that the Christ was Jesus.
(Acts 18:24-28 ESV)
Apollos also like Peter, John, Paul, Stephen and the rest preached that Jesus was the Messiah from O.T. scriptures. The clear emphasis in Acts is that Jesus is the Messiah unlike the council of Nicaea which had a very different emphasis! An emphasis that the Apostles and Evangelists did not preach.
The book of Acts should serve as an authentic reference on what our emphasis should be!