תלמוד על במדבר 22:18

Rabbi Elazar HaKappar would say: Anyone who respects his friends only for their money, in the end will be sent away from them in disgrace. And anyone who disgraces his friends in order to fulfill a mitzvah, in the end will be sent away from them honorably.
How do we know that anyone who respects his friends only for their money, in the end will be sent away from them in disgrace? For this is what we find with Bil’am the wicked, who respected Balak for his money, as it says (Numbers 22:18), “And Bil’am answered, saying to Balak’s servants: If Balak gives me his house full of silver and gold.” And how do we know he was sent away in disgrace? For it says (Numbers 24:11), “Now, get out of here and go back to your own place…for the Eternal has denied you honor.”
And how do we know that anyone who disgraces his friends in order to fulfill a mitzvah, in the end will be sent away from them honorably? For this is what we find with Moses our teacher, who disgraces Pharaoh in order to fulfill a mitzvah, as it says (Exodus 11:8), “All of your servants shall come down and bow before me, saying.” Now, was Pharaoh up on a roof and was Moses down on the ground? No, what Moses meant was: Even if all your servants who stand up (and bow) before you on your platform were to get up and beg me, I would not listen to them. And how do we know he was sent away honorably? For it says (Numbers 33:3), “On the day after the Passover offering, the Israelites went out with a raised hand.”