 For example, during worship services on the first Sunday of each month, members of the congregation are invited to extemporaneously share their testimonies of the gospel, faith-building experiences, and other uplifting messages with other members of the congregation.On each of the other Sundays during the month, members of the congregation ages 12 and older are selected in advance to give a "talk" (a "sermon" or "homily") on a particular gospel principle or topic.Children under age 12 are given the opportunity to give short talks in their Primary meetings.