Thou shalt beat him with the rod, and shalt deliver his soul from hell.
Thou shalt beat him. The "thou" is emphatic: thou, the parent, not lightly delegating the power of the rod to others. If we would pray when we strike our children, it would provoke to wrath neither God nor them-`Lord, do thou be pleased to strike in with every stroke, that the rod of correction may be a rod of instruction' (Swinnock in Bridges).