Read
Read Romans chapter 12. If short on time, just read verses 15-16.
Feel free to be creative or feel free to keep it simple, just read.
Discuss
Can anyone remember what the main idea from the sermon was word-for-word? Can anyone remember what the main points from the outline were word-for-word? If not, can you give a summary? When is the last time you rejoiced with someone who was rejoicing, and wept with someone who was weeping? How would you describe the different levels of responsibility each family member has with identifying with certain people to varying degrees depending on what the reason for their rejoicing and weeping is?
Sing
Sing a Psalm or Hymn or Spiritual Song together.
Feel free to be creative or feel free to keep it simple, just sing.
Pray
Pray for one another.
Consider having each believer in the family go around and pray for the other members of the family to be found obedient to these two imperatives, and to look to Christ for strength to obey and to cling to His righteousness when found disobedient.