Proslavery advocates in the antebellum American South developed elaborate arguments attempting to justify slavery using the Bible. The primary biblical argument was that slavery was sanctioned and regulated in both the Old and New Testaments. Proslavery writers cited passages such as those in Leviticus and Ephesians to argue that God ordained slavery. Abolitionists also used the Bible but interpreted its teachings as condemning slavery and upholding the equality of all people. How the Bible is interpreted and applied is important, as interpreting it in a way that claims absolute certainty can contribute to violence.