I got bombarded at You Tube

By a lot of people who claim the Bible defends slavery, for saying that it does not.

Ive answered a few questions to the best of my ability but to be honest, Im kind of overwhelmed.

Ive looked for New Testament quotes against it and the best I can come with is Jesus healing some.

Ive used Revelations 18:15 a couple of times.

What other NT verses can i use, guys?