Variantly: "Listen, O heavens, and I will speak": The Holy One Blessed be He said to Moses: Tell Israel: Look at the heavens that I have created to serve you. Have they changed their courses? Does the solar orb ever cease from rising in the east and lighting the entire world, viz. (Koheleth 1:15) "and the sun rises and the sun sets"? And, what is more, it revels in doing My will, viz. (Psalms 19:6) "He is like a groom emerging from his bridal canopy, rejoicing like a hero to run the course!"
(Devarim, Ibid.) "and hear, O earth, the words of My mouth": Look at the earth that I have created to serve you. Has it ever changed its ways? Have you ever sowed and it has not sprouted? Have you ever sowed wheat and it sprouted barley? Or is there an ox that does not thresh or plow today, or an ass that is not laden and does not go? And thus of the sea it is written (Jeremiah 5:22) "Will you not fear Me? says the L-rd. Will you not tremble before Me? For I have set sand as a bound against the sea, etc." Has it ever changed its ways and said I will rise up and flood the world? No! As it is written (Iyyov 38:10-11) "… and I imposed My law upon it … and I said: Until here shall you go and no further!" Not only that, but it grieves and can do nothing, viz. (Jeremiah, Ibid.) "Its waves rage but cannot cross it." Now does this not follow a fortiori? If these (waves), which were created neither for reward nor punishment — if they are meritorious, they are not rewarded, and if they sin, they are not punished, and they do not pity their sons and daughters — if these have not changed their ways — then you, who, if you are meritorious, are rewarded, and who, if you sin, are punished, and you do pity your sons and daughters — how much more so should you not change your ways!