TITUBA, suddenly bursting out: Oh, how many times he bid me kill you, Mr. Parris! He say Mr. Parris must be kill! Mr. Parris no goodly man, Mr. Parris mean man and no gentle man, and he bid me rise out of my bed and cut your throat! But I tell him "No! I don't hate that man. I don't want to kill that man." But he say, "You work for me, Tituba, and I make you free! I give you pretty dress to wear, and put you way high up in the air, and you gone fly back to Barbados!" Why might Arthur Miller have written these lines for Tituba to say?

This question is about "The crucible"

Because Arthur Miller was showing how slavery is manipulative and incriminating.

Explanation:

Tituba is the slave of the Reverend Parris. She practices what the Puritans call "black magic" and recognizes that she is involved in witchcraft, but not before showing how white Puritans were hypocrites and just as bad as she is, showing what Reverend Parris (her "owner") ask her to do it.

When Miler wrote this scene he wanted not only to present the hypocrisy that was established among religious leaders, but also the manipulative character that slavery provided, in addition to showing the domination of whites over blacks.