Can anyone explain the motive behind the theme for this RCCG Church Program [Photo]

Below is a poster to a Redeemed Christian Church Of God Program. The intriguing thing about the RCCG poster is the theme which says ''Sex Is Sweet''.

The picture of the poster was shared by an Instagram user who doesn't understand why a Church would hold a program with such a theme.

The 2 day Church Program will be taking place in Kaduna State with Pastor Simba Abubakar as the Minister.

Can anyone explain the motive behind the theme?