The objection may be made, however, that while its application may be admitted in the physical world, it is not so certain in the spiritual sphere. It is just here that modern research steps in. The laws of the spiritual world have been largely identified as the same laws that exist in the natural world. Indeed, it is claimed that the spiritual existed first, that the natural came after, and that when God proceeded to frame the universe, He went upon lines already laid down. In short, that God projected the higher laws downward, so that the natural world became “an incarnation, a visible representation, a working model of the supernatural.” “In the spiritual world the same wheels work—without the iron.”

Our whole life is thus bounded and governed by laws ordained and established by God, and that a man reaps what he sows is a law that can be easily observed and verified, whether we regard sowing to the flesh or sowing to the Spirit. The evil harvest of sin and the good harvest of righteousness are as sure to follow the sowing as the harvest of wheat and barley. “Life is not casual, but causal.”

We shall see, as we proceed, that the working of the law is evident in the earliest periods of Bible history. Job’s three friends reasoned that he must be a great sinner, because they took it for granted that the calamities that overtook him must be the results of his wickedness. “Remember, I pray thee,” said one of them, “who ever perished, being innocent? or where were the righteous cut off? Even as I have seen, they that plough iniquity, and sow wickedness, reap the same.”

In the book of Proverbs we find it written: “The wicked worketh a deceitful work: but to him that soweth righteousness shall be a sure reward.” And again: “He that soweth iniquity shall reap vanity.”

In Isaiah we find these words: “Say ye to the righteous that it shall be well with him; for they shall eat the fruit of their doings. Woe unto the wicked! it shall be ill with him: for the reward of his hands shall be given him.”

Hosea prophesied regarding Israel: “They have sown the wind, and they shall reap the whirlwind.” “Sow to yourselves in righteousness,” he advised them, “reap in mercy.”