“Whoever steals a man and sells him, and anyone found in possession of him, shall be put to death.” Exodus 21:16
"There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus." Galatians 3:28
"We also know that the law is made not for the righteous but for lawbreakers and rebels, the ungodly and sinful, the unholy and irreligious, for those who kill their fathers or mothers, for murderers, 10 for the sexually immoral, for those practicing homosexuality, for slave traders and liars and perjurers—and for whatever else is contrary to the sound doctrine" 1 Timothy 1:9-10
"If a slave can gain freedom, they should avail themselves of the opportunity." 1 Corinthians 7:21
There is more.