The Bible is full of analogies drawn from nature. When Christ was on earth, it was His favorite mode of teaching to convey heavenly truths in earthly dress. "Truths came forth from His lips," wrote one, "not stated simply on authority, but based on the analogy of the universe. His human mind, in perfect harmony with the Divine mind with which it was united, discerned the connection of things, and read the eternal will in the simplest laws of nature. For instance, if it were a question whether God would give His Spirit to them that asked, it was not replied to by a truth revealed on His _authority:_ the answer was derived from facts lying open to all men's observation. 'Behold the fowls of the air'; 'behold the lilies of the field'--learn from them the answer to your question. A principle was there. God supplies the wants He has created. He feeds the ravens--He clothes the lilies--He will feed with His Spirit the craving spirits of His children." This is the style of teaching that Paul adopts in the text. He takes the simple process of sowing and reaping, a process familiar to all, and reads in it a deeply spiritual and moral meaning. It is as if he said that every man as he journeys through life is scattering seed at every step. The seed consists of his thoughts, his words, his actions. They pass from him, and by and by (it may be sooner or later), they spring up and bear fruit, and the reaping time comes. Life a Seed-Time. The analogy contains some solemn lessons. Life is to be regarded as a seed-time. Every one has his field to sow, to cultivate, and finally, to reap. By our habits, by our intercourse with friends and companions, by exposing ourselves to good or bad influences, we are cultivating the seed for the coming harvest. We cannot see the seed as it grows and develops, but time will reveal it. Just as the full-grown harvest is potentially contained in the seed, so the full results of sin or holiness are potentially contained in the sinful or holy deed. "When lust hath conceived, it bringeth forth sin, and sin, when it is finished, bringeth forth death." Just as we cannot reap a good harvest unless we have sown good seed, so we cannot reap eternal life unless we have sown to the Spirit. Weeds are easy to grow. They grow without the planting. And sin springs up naturally in the human heart. Ever since our first parents broke away from God, the human heart has of itself been thoroughly vile, and all its fruits have been evil. "The heart of the sons of men is fully set in them to do evil." Do you doubt it? If you do, ask yourself what would become of a child if it was left to itself--no training, no guidance, no education. In spite of all that is done for children, the evil too often gets the upper hand. The good seed must be planted and cared for, often with toil and trouble: but the harvest will be sure.