In previous Q&As, we published guidelines for opening and closing prayers, and for preparing and giving sermonettes. We pointed out that our weekly and annual Sabbath services begin with a song service (usually by singing three congregational hymns), followed by an opening prayer, a sermonette or short spiritual message of about 10 to 15 minutes, the singing of another congregational hymn, announcements, followed (occasionally) by a special music presentation (especially during the Feast of Tabernacles), the sermon or main spiritual message of about 1 hour to 1 hour and 15 minutes, and we conclude with a final congregational hymn and the closing prayer.
"You are the light of the world. A city that is set on a hill cannot be hidden."
-Matthew 5:14