A couple days ago, my son did a load of laundry and washed a pillow. Since then, the washer will not drain or spin. The washer will still agitate and will fill with water. All the machine does after agitating is, I hear a clicking noise of the timer.

When agitating the motor moves the belt, so that should mean both the belt and motor are good, right???

We have been finding parts of the pillow stuffing around the washing "bowl", but not inside at all. We did take off the outer hose and the water all drained out, but didn't see of the pillow stuffing come out. I'm guessing the problem has to be related to washing the pillow, because of the timing of the machine messing up right afterwards.

So we are stuck going to the laundry mat until we figure this out.

Please help. I don't have anything to check the voltage or anything like that. I have tried the "trick" of unplugging power for 1 minute, then plugging it in, then opening and shutting the lid 6 times in 30 seconds.

MODEL #: wbsb3140daww

Your pump is electric. It's located in the cabinet toward the back right. You'll be able to identify the component by the drain hoses attached to it. A quick way to check to see if it's clogged is to take the drain hose out of the stand pipe and lower it to a level below that of the water in the tub. If water trickles out, or no flow at all, you'll likely have to replace it. This isn't 100% reliable, as water can possibly flow through the pump, and still the impeller can be clogged.
Here's a parts breakdown that shows the general construction of your machine. To open the cabinet, notice the spring clips about 4 inches from each front top corner (the machine top; not the console). While lifting each respective corner, push in against the clip with a flat tool (like a putty knife) until that corner releases. This will expose the screws that hold the front panel in place.
Cabinet, cover & front panel replacement parts for General Electric WBSR3140DAWW Washer | AppliancePartsPros.com