7 Would you see the loving-kindness of God, O thou that art lately come to the catechising? Would you see the loving-kindness of God, and the abundance of His long-suffering? Hear about Adam. Adam, God's first-formed man, transgressed: could He not at once have brought death upon him? But see what the Lord does, in His great love towards man. He casts him out from Paradise, for because of sin he was unworthy to live there; but He puts him to dwell over against Paradise: that seeing whence he had fallen, and from what and into what a state he was brought down, he might afterwards be saved by repentance. Cain the first-born man became his brother's murderer, the inventor of evils, the first author of murders, and the first envious man. Yet after slaying his brother to what is he condemned? Groaning and trembling shall you be upon the earth. How great the offense, the sentence how light!
Source: Catechetical Lectures (New Advent)