So I can recommend three new and really good books on preaching for you to read while you are sheltering in place. I suspect your pastor will be very glad if you who are laypeople would read these books and draw closer into the daily and weekly aspects of the stewardship of the call to preach. Good, Christ-honoring, people-loving, exegetically and doctrinally sound, culturally sensitive, intellectually challenging, emotionally uplifting, Spirit-empowered preaching takes a wealth of prayer, loads of study, and great humility before Christ and his people. It is a community project too, for those in the pew have a responsibility to pray for the preacher to hear from God and to communicate accurately what God has said, to affirm the preaching, to be a faithful steward of the obedient responses to the sermon, to communicate the proclaimed word to the baptized and the unconverted, and to share all good things with the one who teaches. This participatory event is at the center of the life of any local congregation and any maturing believer. Therefore it would be good and wise to know of what this task consists.
1 — The Whole Counsel of God: Why and How to Preach the Entire Bible (Crossway). “Written to make a case for the necessity of a long-term plan for preaching through the entire Bible instead of just through individual books, this is not just a book on how to preach, but also how to plan and prepare long-range preaching programs through the whole counsel of God.” https://www.crossway.org/books/the-whole-counsel-of-god-tpb/
2 — A Little Book for New Preachers: Why and How to Study Homiletics (IVP). “In this brief introduction to preaching, Matthew Kim helps to prepare those called to preach the Word. A seasoned preacher himself, Kim provides proven insight and guidance about the importance and history of preaching, the characteristics of faithful preaching, and the personal habits of a faithful preacher. With his help, both those training for ministry and those new to the pastoral task will be encouraged as they undertake their calling.” https://www.ivpress.com/a-little-book-for-new-preachers
3 — Say It! A Celebration of Expository Preaching in the African American Tradition (Moody). “The contributors in this volume give examples of African American Biblical exposition in every section of the Old Testament and New Testament. They also explain how to preach from narrative, poetical, prophetic, epistolary, and apocalyptic genres throughout the Scriptures.” (Even though you know the editor, get this book because of the giftedness of the contributors.) https://www.moodypublishers.com/books/current-issues/say-it/