3. To prepare them to become laborers in the vineyard of the Lord, it is not only necessary that they should be converted, but that they should _grow_ in _grace_, and in the _knowledge_ of our Lord Jesus Christ. I have already shown what an intimate connection there is between high spiritual attainments and eminent usefulness, and between a knowledge of truth and the work of sanctification in the heart. But energy of mind, and habits of deep thought and close study, are of great importance, as talents to be employed in the service of God. These must also be cultivated in the Sabbath school. Let it, then, become a subject of anxious inquiry how you may be instrumental in promoting these several objects, so necessary to the great end you have in view. In this matter, the following directions may be of service to you:-- 1. _Labor to obtain a clear, full, and discriminating view of gospel truth yourself._ This is indispensable, if you would impress the same upon the minds of others. If your general views of truth are obscure, indefinite, and unsatisfactory to yourself, your instructions will be of the same character. 2. _Study to become skilful in the sacred art of so communicating divine truth to children, that they will understand it._ Little as this may be esteemed, it is one of the most valuable talents you can possess. I know of no other which females can so profitably employ in the service of Christ. On this subject, I will offer the following suggestions:-- (1.) _Study the juvenile mind._ Observe the principles by which it is developed and called forth into action. See how you can apply these principles to effect the object in view. Be familiar with children. Become acquainted with their language and modes of thinking; and strive to adapt yourself to their capacities. (2.) _Use such helps as you can obtain._ There are many works published on the subject of education, which develop important principles, of great use in communicating knowledge to the young. Some of these are especially designed for Sabbath school teachers. Study them with diligence; treasure up all useful hints, and apply them in practice. (3.) _Aim at drawing out the minds of the children, and teaching them to study and think, with clearness and precision, for themselves._ There is a great difference between _conversing with_ children and _talking to_ them. By the former, you call their minds into exercise, and get hold of their feelings. Thus you will secure their attention. But the latter will be much less likely to interest them; for, being the recipients of thought, instead of thinking for themselves, they participate less in the exercise. By engaging them in conversation, and leading that conversation in the investigation of truth, you teach them to _think_. The mental discipline which this calls forth, is a matter of no small consequence. It may have an important bearing upon their whole future characters.