Evangelism and the great commission (Matthew 28:18-20): 1) The Plan of Salvation, 2) Its Scope, 3) Its People, 4) Its Results. Each person should give a brief synopsis.
The Bible is right about sexual ethics (Ephesians 5:3): 1) Attire, 2) Abstinence, 3) Adultery. Each person should keep the church an oasis from worldly carnality.
Psalm 119:1-8, the behavior of the blessed: 1) Blessed Conduct, 2) Binding Commands, 3) Bona Fide Commitment. Each person should become more familiar with Psalm 119.