No starter operation?

I shut it off to go into my sisters birthday party, came out a few hours later and nothing works when I turn key except lights in and out of van. Radio and heater blower. I can hear fuel pump but nothing else. Engine makes no noise when you turn the key. The only light that comes on in the dash is a little man maybe an air bag light. Thats it. Then when you take key out shut doors they all stay on I had to dis connect battery to shut all accesories off. And head and tail lights stay on too. But checked all the fuses with test light and found nothing. Please help.