New Gem | No More Learning

Though our love pleads now in your favour,
My soul must equal yours in honour:
Though offending me, you prove worthy too;
I must, by your death, prove worthy yet of you.

Word:

doubt

Question:

What feat equals her soul?

Answer (optional):

The speaker believes that they must prove themselves worthy of the person they love through their death because they must maintain their honor and avenge their father, and in doing so, they must equal the honor and fateful valour of the person they love.