A support group, like any small group, should number no more than 12 people in size for optimal effectiveness, but has a distinctive purpose that sets it apart --that of bolstering those who are suffering or struggling, with compassion and unconditional acceptance.

While Bible study may be a part of the program, it is not primarily a Bible study group. While prayer should be a part of the process, it is not primarily a prayer group. While a witness of Christ should be maintained, it is not primarily an evangelistic event.
 

"What a wonderful God we have--he is the Father of our Lord Jesus Christ, the source of every mercy, and the one who so wonderfully comforts and strengthens us in our hardships and trials. And why does he do this? So that when others are troubled, needing our sympathy and encouragement, we can pass on to them this same help and comfort God has given us." 2 Cor. 1:3-4 (Living)