Not cranking

Drove it parked it went into the store returned, car won't crank. Removed starter had it bench checked they said starter was good reinstalled it. Still no crank. Bendix on starter engaging but motor won't turn. I thought maybe ignition switch or park neutral safety switch but by passed all switches and safeties by shorting terminals on solenoid Bendix engaging but still no crank. All battery connections are clean and corrosion free. All grounds to engine are tight.