A) In yet another significant moment, John says he was in the spirit on the Lord’s Day when he heard a loud trumpet sound. There are three crucial points here. First, he was in the spirit, referring to the Holy Spirit, which is not only present when receiving material for holy writings but is also part of walking in the power of the Spirit. Every Christian has access to this as long as it is connected to the purposes of God.

B) Second, on the Lord’s Day, which refers to the first day of the week, by this time in Christian history, had become the day of gathering for Christians. Dave also offers up a possible distinction between the Lord's Day and the Sabbath of the Old Testament. It's an exciting concept to review. But we are forbidden to drop judgment on people because of Colossians 2:16. 

C) Third, a loud voice like a trumpet, whether an actual trumpet or a voice, is missing the point. What is clear is that when trumpets are blown, significant events take place. When a trumpet sounds, people are assembled, declarations are made, and God speaks.