Spurgeon's Advice on Working with Children

In dibbling beans, the old practice was to put three in each hole: one for the worm, one for the crow, and one to live and produce the crop. In teaching children, we must give line upon line and precept upon precept, repeating the truth we would inculcate, till it becomes impossible for the child to forget it. We may well give the lesson once, expecting the child's frail memory to lose it; twice reckoning that the Devil, like an ill bird, will steal it; thrice, hoping that it will take root downward and bring forth fruit upward to the glory of God.