One of my poems in a film I am writing

Hey there! I am writing a film for fun. The following poem is spoken by my main protagonist right before he kills the villain.

“I cast my sword, and show my brand.
For I will strike you, from this land.
Forever after, by an angels thorn.
For the pain and suffering, all those mourned.
Of that which, you will cause no more.
Because heavens gates, beats hell’s score.”