Adam and Eve at their creation had knowledge of the original law of God. It was imprinted upon their hearts, and they were acquainted with the claims of law upon them. When they transgressed the law of God, and fell from their state of happy innocence, and became sinners, the future of the fallen race was not relieved by a single ray of hope. God pitied them, and Christ devised the plan for their salvation by Himself bearing the guilt. When the curse was pronounced upon the earth and upon man, in connection with the curse was a promise that through Christ there was hope and pardon for the transgression of God’s law. Although gloom and darkness hung, like the pall of death, over the future, yet in the promise of the Redeemer, the Star of hope lighted up the dark future. The gospel was first preached to Adam by Christ. Adam and Eve felt sincere sorrow and repentance for their guilt. They believed the precious promise of God, and were saved from utter ruin.
As soon as there was sin, there was a Saviour. Christ knew that He would have to suffer, yet He became man’s substitute. As soon as Adam sinned, the Son of God presented Himself as surety for the human race, with just as much power to avert the doom pronounced upon the guilty as when He died upon the cross of Calvary.