I admire people who can articulate their beliefs and persuade others with their rhetoric. Some call it the gift of gab or having a way with words. Others call it eloquence.
Apollos had that gift. We are told that he was an eloquent man and mighty in the Scriptures (Acts 18:24). But although he taught accurately about Christ, he preached only of the baptism of John which was a baptism of repentance from sin (v.25; 19:4).
Apollos knew about Jesus teachings but may not have known about His death and resurrection and that the Spirit had now come (Acts 2). His teaching was incomplete because he didnt know about being filled with the Spirit for daily empowerment.
So Priscilla and Aquila, a wife and husband who were friends of Paul, invited Apollos into their home to correct his teaching. Although he was highly educated and knew the Scriptures well, Apollos humbly accepted their instruction. As a result, Apollos was able to continue his ministry, but with newfound understanding.
Psalm 25:9 reminds us that God guides the humble in what is right and teaches them His way (NIV). If we have a spirit of humility, we can be taught by God and be used to touch the lives of others.
Read: Acts 18:24-28