[dark_lord]

Does the Bible condemn slavery? Were Christians told in the Bible to free their slaves?

No. But one must be careful when dealing with such a broad topic with a single concept word. For example, slavery in Jewish society was very different than the cruelty of slavery in Roman society. It was conceptually closer to indentured servitude.

[george wythe]

slavery in Jewish society was very different than the cruelty of slavery in Roman society

Which slavery does the New Testament address?

I quoted a verse from the New Testament, do you need more?