They generally get taught by experience--that is, by the rough treatment and hard knocks which they bring upon themselves by their violation of these principles.

But the faithful parent can aid them in acquiring the necessary knowledge in a far easier and more agreeable manner by appropriate instruction.
2.

The mother must not be distressed or too much troubled when she finds that her children, while very young are prone to fall into deviations from the truth, but only to be made to feel more impressed with the necessity of renewing her own efforts to teach them the duty, and to train them to the performance of it.
3.

She must not be too stern or severe in punishing the deviations from truth in very young children, or in expressing the displeasure which they awaken in her mind.

It is instruction, not expressions of anger or vindictive punishment, that is required in most cases.