The online latin translators I use don't recognise those lines as a whole and are having trouble with Vivant! However... when I sing in concerts, a simultaneous translation is available if you read the programme, so I've rootled round to see what I can come up with.

'Vivant omnes virgines'

Vivant ?- vivos = life - be alive, sustain life.
omnes = all
virgines = virgins

'Faciles formosae'

Faciles = Easily (facilitate)
formosae = beautifully (?transfer of the body of a saint)

And still it makes no sense!

I suspect it was 'virgines' that was giving the priest trouble... although my experience of priests in general would indicate that they have no trouble at all with the 'gin' part.

LTS