Rashi
Jewish
1040–1105
“God spoke one thing I heard two things from it, and what are the two things? First, that God has strength to repay a man according to his deed. Second, that You, O Lord, have kindness. Now, from which statement do we derive this? From the second commandment of the Decalogue. We derive from it that the Holy One, blessed be He, punishes iniquity and preserves kindness, as it is stated therein: “I visit the iniquity of the fathers upon the children, etc.” Therefore, I am confident that He will pay a good reward to the righteous and punishment to the wicked. I learned from the work of Rabbi Moshe Hadarshan, but our Sages interpreted it as referring to [the maxim that] “Remember” and “Keep” were stated in a single utterance.”