found

Exodus 21:16
Whoever kidnaps another man must be put to death, whether he sells him or the man is found in his possession.

Ezekiel 27:13
Javan, Tubal, and Meshech were your merchants. They exchanged slaves and bronze utensils for your merchandise.

1 Timothy 1:10
for the sexually immoral, for homosexuals, for slave traders and liars and perjurers, and for anyone else who is averse to sound teaching

Revelation 18:13
of cinnamon, spice, incense, myrrh, and frankincense; of wine, olive oil, fine flour, and wheat; of cattle, sheep, horses, and chariots; of slaves and souls of men.

then that

Exodus 21:16
Whoever kidnaps another man must be put to death, whether he sells him or the man is found in his possession.

Exodus 22:1-4
If a man steals an ox or a sheep and slaughters or sells it, he must repay five oxen for an ox and four sheep for a sheep. . . .

and thou shalt

Deuteronomy 19:19
you must do to him as he intended to do to his brother. You must purge the evil from among you.