Did the Puritans agree with slavery?

The Puritans did agree with slavery. They saw it as in agreement with the Bible, but slavery in the Massachusetts colonies was regarded as slightly less harsh than the slavery in the southern colonies because the Puritans also believed that it was their responsibility to provide for the slaves' well being, both physically and spiritually.

Source: http://www.usconstitution.net/consttop_slav.html