The document is a guide for a Bible study on Pentecost Sunday, focusing on Acts 2:1-11, which describes the descent of the Holy Spirit on the apostles. It outlines the events inside and outside the room where the apostles gathered, highlighting their experience of speaking in different languages as a result of the Holy Spirit. The text also includes reflections on the readings from Romans 8:8-17 and John 14:15-26, emphasizing the importance of the Holy Spirit in the lives of believers.