2002 Oldsmobile Alero Hope you can help

Just replaced the spark plugs and spark plug wires. I start the car and the engine starts reving uncontrolably. My foot is no where near the gas peddle, the peddle not moving. I don't won't to leave it running so I can look and trouble shoot cause it seriously sounds like the car is going to blow up. I took a quick look at the engine and it looked like it was going to jump off the mount. Rev up, go down, rev up, go down. I double checked the spark plugs and firing order and all is good with the parts. Still you can tell me the firing order, so I can tripple check. Please let mr know if you need any other info.