He began to speak boldly in the synagogue. When Priscilla and Aquila heard him, they took him aside
(took him aside so they could talk to him undisturbed) and taught
(explained to) him even more accurately
(more thoroughly, correctly) about "the way of God."[Apollos only knew about John's baptism of repentance. The expression "the way of God" probably refers here to the basics of the gospel: how Jesus died for our sins and rose again, baptism in the Holy Spirit, etc. The eloquent Apollos was taught by a tentmaker and his wife. During these conversations, they probably also told him about all the amazing things that were happening in the church in
Corinth, where people were functioning in the gifts of the Spirit. Priscilla and Aquila had recently come from there, see . Perhaps Apollos was inspired by their stories and also wanted to visit the church there.]