1997 Ford Escort Engine Wont Start

I was driving down the road at about 25 when the engine just died? I know right. I wasn't accelerating fast or anything, just driving calmly within the road rules when the engine just died (like unplugging a running computer from the wall). The engine will not start now, it turns over but wont start. The battery is fine. Checked the electrical system, the spark plugs work and everything. Checked the fuses and they're fine. Replaced the fuel filter and it still wont start. Next thing I was gonna try was replacing the timing belt. Is there any advice on what else to do should the timing belt be replaced and the car still wont start?