Who said "Let us cheerfully do our duty."?

This quote is attributed to John Brown.

Let us cheerfully do our duty. - John Brown

"Let us cheerfully do our duty."

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."