"Whoso that troweth nat this, a beest he is,"
Quod tho Tiburce, "if that I shal nat lye."
And she gan kisse his brest, that herde this,
And was ful glad he koude trouthe espye.
"This day I take you for my own ally."

– Geoffrey Chaucer

The Canterbury Tales, The Second Nun’s Tale. Tiburtius has been well and truly won over to Christianity, saying that those who don’t believe the Christian faith are nothing but beasts. When she hears this Cecilia kisses his breast and is glad that he could perceive truth. She now sees him as an ally in Christ.