He taught others about Jesus with an enthusiastic spirit and with accurcy - Acts 18:25
Apollos loved to teach the Word of God in the synagogues
His limitation was he did not fully understand the significance of Jesus' death and resurrection
He finally received understanding from Aquila and Priscilla and from then on, Apollos cound not stop
He moved to Corinth to be with Paul and some of the believers credited him with starting the church - 1 Corinthians 1
Apollos became a great teacher and preacher because he had the passion for God's Word that all men of God need