out of curiosity, pursue novelties of theological debate. But serious problems arise, as Paul pointed out, when anything is substituted for the Good News. The challenge for believers will always be to communicate the unchanging truth of the gospel in a constantly changing world. (1) The church at Ephesus may have been troubled by the same type of heresy that threatened the church at Colosse—the teaching that to be acceptable to God, a person had to discover a certain hidden knowledge and had