The biblical book Isaiah will be the focus of a worldwide Sabbath School study by Seventh-day Adventists in the first quarter of 2021. Isaiah is often called the Gospel Prophet. Dr. Paul Petersen, former chair of the Religion and Biblical Languages Department and professor of the Hebrew Bible at Andrews University, will week by week introduce the chapters covered. Chapter 1 is the introduction to the whole book. Here is the link to his first (approximately 15 min) YouTube presentation: https://www.youtube.com/watch?v=tGokbK0sBN4&feature=youtu.be