Observe, then, the sphere and limit of agency. We can introduce the truth to men, but that truth the Lord himself must bless; the living and growing of the word within the soul is of God alone. When the mystic work of growth is done, we are able to garner the saved ones in the church. For Christ to be formed in men the hope of glory is not of our working, that remains with God; but, when Jesus Christ is formed in them, to discern the image of the Saviour and to say, "Come in, thou blessed of the Lord, wherefore standest thou without?" this is our duty and delight. To create the divine life is God's, to cherish it is ours. To cause the hidden life to grow is the work of the Lord; to see the uprising and development of that life and to harvest it is the work of the faithful, even as it is written, "When the fruit is brought forth, immediately he putteth in the sickle, because the harvest is come." This, then, is our first lesson; we see what we can do and what we cannot do. II. Our second head is like unto the first, and consists of WHAT WE CAN KNOW AND WHAT WE CANNOT KNOW. First, _what we can know_. We can know when we have sown the good seed of the word that it will grow; for God has promised that it shall do so. Not every grain in every place; for some will go to the bird, and some to the worm, and some to be scorched by the sun; but, as a general rule, God's word shall not return unto him void, it shall prosper in the thing whereto he hath sent it. This we can know. And we can know that the seed when once it takes root will continue to grow; that it is not a dream or a picture that will disappear, but a thing of force and energy, which will advance from a grassy blade to corn in the ear, and under God's blessing will develop to actual salvation, and be as the "full corn in the ear." God helping and blessing it, our work of teaching will not only lead men to thought and conviction, but to conversion and eternal life. We also can know, because we are told so, that the reason for this is mainly because there is life in the word. In the word of God itself there is life, for it is written--"The word of God is quick and powerful," that is, "living and powerful." It is "the incorruptible seed which liveth and abideth for ever." It is the nature of living seeds to grow; and the reason why the word of God grows in men's hearts is because it is the living word of the living God, and where the word of a king is there is power. We know this, because the Scriptures teach us so. Is it not written, "Of his own will begat he us by the word of truth"?