Haazinu 

האזינו

In the opening words of the Torah portion, Moses conveys a message to the Israelites: Learn from how the heavens and the earth diligently and consistently fulfill the will of the Creator. 

Moses said: “Listen, the heavens” (Deuteronomy 32:1). The Holy One, blessed be He, said to Moses: Tell Israel: Look to the heavens that I created to serve you; have they altered their conduct at all? Or perhaps, did the orb of the sun ever say: I am not rising in the east and illuminating for the entire world?… Not only does it perform its task, but it is happy to perform My will for Me…. 

Moses continued: “And the earth will hear the sayings of my mouth” (32:1). The Holy One, blessed be He, said to Moses: Tell Israel: Look to the earth that I created to serve you; has it altered its conduct at all? Have you sown in it and it did not grow plants? Have you sown wheat and it produced barley? Or did a cow ever say: I am not threshing or I am not plowing today? Or did a donkey ever say: I am not bearing a burden and I will not walk?… 

Can these matters not be inferred a fortiori: If these that were made not for reward and not for loss, i.e., if they perform a good deed they do not receive reward and if they sin they do not receive a punishment, and they do not need to have compassion for their sons and daughters, nevertheless did not alter their conduct from what is expected of them, you, who if you perform a good deed you receive a reward and if you sin you receive a punishment, and you must have compassion for your sons and your daughters, all the more so that you must not alter your conduct from what is expected of you. <source>(Sifrei Devarim, Haazinu 506) </source>