Selections from Acts 18
A Jew named Apollos, a native Alexandrian, an eloquent man who was powerful in the Scriptures, arrived in Ephesus. This man had been instructed in the way of the Lord; and being fervent in spirit, he spoke and taught the things about Jesus accurately, although he knew only John's baptism. He began to speak boldly in the synagogue. After Priscilla and Aquila heard him, they took him home and explained the way of God to him more accurately. He greatly helped those who had believed through grace, for he vigorously refuted the Jews in public, demonstrating through the Scriptures that Jesus is the Messiah.
The Hellenistic world had no shortage of teachers and philosophers who could expound on all the latest modes of thought and experience circulating around the Greek region. But there was a new brand of teacher in town. And his new textbook felt something like a sword.
Bible teaching is so crucial to our lives. Even those who have been around the church for years - who have tried to give the Scriptures their close, regular attention - can still stumble over many doctrines and concepts. The answer is faithful Bible teaching, delivered by people who don't just exist to fill a Sunday morning hour but whose hearts breathe the Word, whose minds are enlightened to attract wisdom like a sponge, whose lives paint the pages in real-life colors. Is that what you should be doing? We sure need you.
Look at it this way ...
In order to be true to the Great Commission and to produce a mature church that would reproduce itself, the apostles knew they could not get sidetracked from their primary calling - to pray and to teach the Word of God. It is not accidental that these believers were, first of all, continuing "steadfastly in the apostles' doctrine" or "teaching." It was the apostles' doctrine that gave direction to everything else that happened in the church in Jerusalem. Christian experience, both at the horizontal, human level (such as fellowship and sharing with each other) and at the vertical, divine level (such as prayer and praise) must have divine guidelines. Without these guidelines, Christians can get sidetracked onto peripheral issues and even depart from the will of God. For example, a Christ-centered community of love can quickly digress into a self-centered community. Therefore, all Christian experience must be rooted in and evaluated by Scripture. In this sense, continuing in the "apostles' doctrine" is foundational to all that we do in the church - and in life. - Gene Getz
A final thought:
If God has graced you with the gift of teaching, pour your heart and soul into it. Soak yourself good in the Word each day. And bring it home to the rest of us where our hearts can really hear.