Who said "I have devoted myself fully to this work."?

This quote is attributed to John Brown.

I have devoted myself fully to this work. - John Brown

"I have devoted myself fully to this work."

John Brown

Abolitionist, Militant American 1800–1859

"I John Brown am now quite certain that the crimes of this guilty land will never be purged away but with blood."

"Let us do our duty."

"The Bible is the word of God and is to be obeyed."

"I am here to lay down my life for the cause of justice."