1. 7 Deadly Sins and “The Crucible”
This will help you start your essay!

2. Greed
A selfish and excessive desire for more of something than is needed.
Putnam
Correy says, “If Jacobs hangs for a witch he forfeit up his property-that's law! And there is none but Putnam with 'the coin to buy so great a piece. This man is killing his neighbor for their land.” (Correy)
Parris
Golden candlesticks? The deed for the land that his house is on? (Look for Proctor discussing Parris!)

3. Envy
A feeling of discontented or resentful  longing aroused by someone else's possessions qualities, or luck. 
Abigail
"It is her dearest hope, I know it. There be a thousand names; why does she call mine? There be a certain danger in calling such a name-I am no Goody Good that sleeps in ditches, nor Osburn, drunk and half-witted. She’d dare not call out such a farmer’s wife but there be monstrous profit in it. She thinks to take my place, John.“ (Elizabeth)

4. Wrath Extreme anger Abigail John Proctor
“And mark this. Let either of you breathe a word, or the edge of a word, about the other things, and I will come to you in the black of some terrible night and I will bring a pointy reckoning that will shudder you. And you know I can do it; I saw Indians smash my dear parents' heads on the pillow next to mine and I have seen some reddish work done at night, and I can make you wish you had never seen the sun go down!”
John Proctor
When he admits to being a witch...when he gets angry with Mary Warren....

5. Pride
a high or inordinate opinion of one's own dignity, importance, merit, or superiority, whether as cherished in the mind or as displayed in bearing, conduct.
John Proctor
“Because it is my name! Because I cannot have another in my life! Because I lie and sign myself to lies! Because I am not worth the dust on the feet of them that hang! How may I live without my name? I have given you my soul; leave me my name!”
Reverend Hale
At the beginning, changes at the end...a quote from the beginning and then an explanation of his change may work well to prove this point!
Reverend Parris
He never admits his wrong-doing. He has too much pride.

6. Lust Very strong desire or want for someone Abigail John Proctor
“Abby, I mat think softly of you from time to time. But I will cut off my arm before I’ll ever reach for you again. Wipe it out of mind. We never touched, Abby.”