hello, i asked a friend who learnt and knows Latin about these lyrics when i found it odd that misrere is translated to both "mercy" and "wretched". she says there is no misrere in Latin, but "miserere" means "mercy". "jesu" and "ovas" also doesn't mean anything. so she did a rough translation of this song, and i'd like to have permission to have the lyrics replaces with this that is more accurate.

Lord Master
Hear us, and have mercy
Hear us, Master

Give us peace
And save us from the enemies
Save us, Master

Master hear us
Master have mercy
Give us peace
Oh Saint, glory (to you)

Give us peace
And give them rest
Amongst this rejoiced place
Call me between the blessed
Merciful Master, give them rest
Lord Master, oh Saint, Glory (to you)