What could be the problem(s) with my 2004 Ford Explorer?

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I tried to start it, but it wouldn't start. I tried to jump the starter, and it failed, so I went out and got a new starter. I accidentally wired it up wrong, and it continued to run, so I switched some wires and got a big spark when I hooked the negative up, so I disconnected it, but the terminal got stuck, so it took a while. Then, I took it to my friend, and he found dirt and oil in my gas tank. We had to replace the fuel pump, and now when I turn my key, the Anti-Theft System light is on. The fuel pump turns on, and cuts off and I get no response with anything. He hooked up a toggle switch to bypass the starter with the solenoid, so power went straight to the starter, and he can get it to run if he sprays carburetor cleaner into the fuel intake. The problem is the key will not start the car when I turn.