2. Sin here appears as having power to bar men's way to God. Much ingenuity has been spent on the question why Abel's offering was accepted and Cain's rejected. But the narrative itself shows in the words of Jehovah, 'If thou doest well, is there not acceptance?' that the reason lay in Cain's evil deeds. So, in 1 John iii. 12, the fratricide is put down to the fact that 'his works were evil, and his brother's righteous'; and Hebrews xi. 4 differs from this view only in making the ground of righteousness prominent, when it ascribes the acceptableness of Abel's offering to faith. Both these passages are founded on the narrative, and we need not seek farther for the reason of the different reception of the two offerings. Character, then, or, more truly, faith, which is the foundation of a righteous character, determines the acceptableness of worship. Cain's offering had no sense of dependence, no outgoing of love and trust, no adoration,--though it may have had fear,--and no moral element. So it had no sweet odour for God. Abel's was sprinkled with some drops of the incense of lowly trust, and came from a heart which fain would be pure; therefore it was a joy to God. So we are taught at the very beginning, that, as is the man, so is his sacrifice; that the prayer of the wicked is an abomination. Plenty of worship nowadays is Cain worship. Many reputable professing Christians bring just such sacrifices. The prayers of such never reach higher than the church ceiling. Of course, the lesson of the story is not that a man must be pure before his sacrifice is accepted. Of course, the faintest cry of trust is heard, and a contrite heart, however sinful, is always welcome. But we are taught that our acts of worship must have our hearts in them, and that it is vain to pray and to love evil. Sin has the awful power of blocking our way to God.
3. Note in one word that we have here at the beginning of human history the solemn distinction which runs through it all. These two, so near in blood, so separate in spirit, head the two classes into which Scripture decisively parts men, especially men who have heard the gospel. It is unfashionable now to draw that broad line between the righteous and the wicked, believers and unbelievers. Sheep and goats are all one. Modern liberal sentiment--so-called--will not consent to such narrowness as the old-fashioned classification. There are none of us black, and none white; we are all different shades of grey. But facts do not quite bear out such amiable views. Perhaps it is not less charitable, and a great deal truer, to draw the line broad and plain, on one side of which is peace and safety, and on the other trouble and death, if only we make it plain that no man need stop one minute on the dark side.
4. The solemn divine voice reads the lesson of the power of sin, when once done, over the sinner. Like a wild beast, it crouches in ambush at his door, ready to spring and devour. The evil deed once committed takes shape, as it were, and waits to seize the doer. Remorse, inward disturbance, and above all, the fatal inclination to repeat sin till it becomes a habit, are set forth with terrible force in these grim figures. What a menagerie of ravenous beasts some of us have at the doors of our hearts! With what murderous longing they glare at us, seeking to fascinate us, and make us their prey! When we sin, we cannot escape the issues; and every wrong thing we do has a kind of horrible life given it, and sits henceforth there, beside us, ready to rend us. The tempting, seducing power of our own evils was never put in more startling and solemnly true words, on which the bitter experience of many a poor victim of his own past is a commentary. The eternal duty of resistance is farther taught by the words. Hope of victory, encouragement to struggle, the assurance that even these savage beasts may be subdued, and the lion and adder (the hidden and the glaring evils--those which wound unseen, and which spring with a roar) may be overcome, led in a silken leash or charmed into harmlessness, are given in the command, which is also a promise, 'Rule thou over it.'