Dave continued looking at the Great Banquet in the Kingdom of God.
In the parable of the great banquet in Luke 14, the servant has to go out and invite people to the banquet.
Have a look at the three circles approach to explaining the gospel invitation.
See http://www.movements.net/2015/09/25/why-family-church-west-palm-beach-gets-my-attention.html for some training.
Get into twos and take turns in practicing using this approach.
Is it an approach you think you could use?