The Apostles Doctrine
A Sermon on Acts 2:40-42
And with many other words he bore witness and continued to exhort them, saying, “Save yourselves from this crooked generation.” So those who received his word were baptized, and there were added that day about three thousand souls.
The Fellowship of the Believers
And they devoted themselves to the apostles' teaching and the fellowship, to the breaking of bread and the prayers. (ESV)
The desire for teaching in the early Church; lack of doctrine in the Gospels refuted; doctrinal teaching of the Lord; the Apostles' teaching.