David Walker on slavery and the justice of God

And as the inhuman system of slavery, is the source from which most of our miseries proceed, I shall begin with that curse to nations, which has spread terror and devastation through so many nations of antiquity, and which is raging to such a pitch at the present day in Spain and in Portugal. It had one tug in England, in France, and in the United States of America; yet the inhabitants thereof, do not learn wisdom, and erase it entirely from their dwellings and from all with whom they have to do. The fact is, the labour of slaves comes so cheap to the avaricious usurpers, and is (as they think) of such great utility to the country where it exists, that those who are actuated by sordid avarice only, overlook the evils, which will as sure as the Lord lives, follow after the good. In fact, they are so happy to keep in ignorance and degradation, and to receive the homage and the labour of the slaves, they forget that God rules in the armies of heaven and among the inhabitants of the earth, having his ears continually open to the cries, tears and groans of his oppressed people; and being a just and holy Being will at one day appear fully in behalf of the oppressed, and arrest the progress of the avaricious oppressors; for although the destruction of the oppressors God may not effect by the oppressed, yet the Lord our God will bring other destructions upon them—for not unfrequently will he cause them to rise up one against another, to be split and divided, and to oppress each other, and sometimes to open hostilities with sword in hand. Some may ask, what is the matter with this united and happy people?—Some say it is the cause of political usurpers, tyrants, oppressors, &c. But has not the Lord an oppressed and suffering people among them? Does the Lord condescend to hear their cries and see their tears in consequence of oppression? Will he let the oppressors rest comfortably and happy always? Will he not cause the very children of the oppressors to rise up against them, and oftimes put them to death? "God works in many ways his wonders to perform."

—David Walker's Appeal, in Four Articles; Together with a Preamble, to the Coloured Citizens of the World, But in Particular, and Very Expressly, to Those of the United States of America (1829), from the Preamble