What argument used to justify slarery appealed to people's religious beliefd?

One argument used to justify slavery that appealed to people's religious beliefs was the interpretation of certain biblical passages that seemed to condone or tolerate slavery. For example, some people pointed to references in The Bible that regulated the treatment of slaves rather than outright condemning the practice. This interpretation allowed for the justification of slavery as being part of God's plan or as a natural order of society.