“When Satan afflicted the early church with fierce persecution, the New Testament church met corporately for prayer until the Lord heard their cries and filled them with boldness to continue preaching (Acts 4:24-31). Acts 4:24 says, “They lifted up their voice to God with one accord.” The Greek word used here actually means ‘a concert of voices'” (Joel R. Beeke, The Family at Church: Listening to Sermons and Attending Prayer Meetings, 44).