WRATH
I am Wrath. I had neither father nor mother. I leaped out of a lion's mouth when I was scarce an hour old and ever since have run up and down the world with this case of rapiers, wounding myself when I could get none to fight withal.(2.3.132-134)
The lesson to be learned from Wrath seems to be that it hurts the angry person as much as the person he's angry at, since Wrath wounds himself when he has no one to fight with. Whoops.
GLUTTONY
I am Gluttony. My parents are all dead, and the devil a penny they have left me but a small pension, and that buys me thirty meals a day and ten bevers—a small trifle to suffice nature. (2.3.139-142)
Gluttony is the sin of eating and drinking in excess. Gluttony, for example, eats thirty meals a day and ten "bevers," or snacks, but is still ready for more. Here's hoping he's a Costco member.
SLOTH
I am Sloth. I was begotten on a sunny bank. Heigh-ho! I'll not speak a word more for a king's ransom. (2.3.152-154)
True to his nature, Sloth, the product of lazy days lying in the sunshine on a hill, is too lazy to even describe himself as the other sins have done. He'd rather just sit… and sit.