Reference

Revelation 19
4th Beatitude of Revelation
You're invited! I'm here to tell you an extremely rich dude is having a lavish wedding party for his son. Everyone he invited declined, so now he's opened it up to anyone who will accept the invite.
 
It's the fourth beatitude of the Revelation.
 
Oh, and don't worry if don't have something to wear - he's got you covered.