Sometimes it is good to have all male or all female groups.
It provides an opportunity to work in unison without fear of breaking any of the shibboleths that surround the sexes.
A friend sent me this information on an organisation calling itself The Four Men Prayer Groups.
They describe themselves as "God's Marines" - we might call them "Commandos for Christ".
The concept is simple but profound, watch the video clip and see for yourselves.
It is a format that we would do well to ally ourselves with in Britain: