Will not start after overheating?

My van was having trouble with overheating but one day we were driving, and the van started getting warm. Then we noticed that it was losing power. All of a sudden it just shut off. We popped the hood, but the coolant wasn't too hot. We let it set for a couple hours to let the engine cool all the way down. We went to start it and nothing. It didn't even try to turn over. The battery was good and could tell it had power since the interior lights turned on. When you go to try to start it it'll make a clicking sound but won't turn over.