They disagreed about this verse as well: “And it came to pass in the days of Amraphel” (Genesis 14:1). Rav and Shmuel both identified Amraphel with Nimrod. However, one said: Nimrod was his name. And why was his name called Amraphel? It is a contraction of two Hebrew words: As he said [amar] the command and cast [hippil] our father Abraham into the fiery furnace, when Abraham rebelled against and challenged his proclaimed divinity. And one said: Amraphel was his name. And why was his name called Nimrod? Because he caused the entire world to rebel [himrid] against God during his reign.
Regarding the basic assumption that these homiletic interpretations of names are allusions to one’s future, the Gemara asks: From where do we derive that the name affects one’s life? Rabbi Eliezer said that the verse says: “Go, see the works of the Lord, who has made desolations [shamot] upon the earth” (Psalms 46:9). Do not read the word as shamot, rather as shemot, names. The names given to people are, therefore, “the works of the Lord upon the earth.”
§ And furthermore, it is told: Rabbi Meir and Rabbi Yehuda and Rabbi Yosei were walking on the road together. Rabbi Meir would analyze names and discern one’s nature from his name, while Rabbi Yehuda and Rabbi Yosei were not apt to analyze names. When they came to a certain place, they looked for lodging and were given it. They said to the innkeeper: What is your name? He said to them: My name is Kidor. Rabbi Meir said to himself: Perhaps one can learn from this that he is a wicked person, as it is stated: “For they are a generation [ki dor] of upheavals” (Deuteronomy 32:20). Since it was Friday afternoon, Rabbi Yehuda and Rabbi Yosei entrusted their purses to him. Rabbi Meir did not entrust his purse to him but went and placed it at the grave of the innkeeper’s father.
Remember the days of yore; understand the years of each generation: Always should a man check the names to call his son one that is fitting to be righteous - as sometimes the name causes good or causes bad, as we found by the scouts (Numbers 13:4-15): Shamua son of Zakur, since he did not listen (shama) to the words of the Omnipresent, and it was as if he asked his male (zikhuro) organ (a type of divination), as it states (I Samuel 15:23), "For rebellion is like the sin of divination"; Shafat son of Chori, since he did not judge (shafat) his [evil] inclination, and he was made a hole (chori) from the earth; Yigal son of Yosef, since he put out (perhaps alluding to the word, reveal - yigal) evil speech, hence he was gathered (neesaf) before his time; Palti son of Rafu - he removed (palat) good deeds, and his hands were weakened(rafu); Gadiel son of Sodi - he spoke words as harsh as tendons (gidim); Gadi son of Susi - he threw words [accusingly] towards the Above and brought up grief (sisia), [as] he was the one that said, "it is a land that consumes its inhabitants" (Numbers 13:32); Amiel son of Gemali - he soured (haamah) his strength, since he said, "since it is stronger than us" (Numbers 13:31), and he caused (gamal) himself that he did not enter the Land of Israel; Setur son of Michael, since it was in his heart to contradict (listor) what is written - who is like God (mi hu ke'El), the Lord, as it states (Deuteronomy 33:26), "There is none like the God of Yeshurun"; Nachbi son of Vofsi - he hid (hechbi) the truth and ended (pasah) faith from his mouth - as in "the faithful ones have ended (pasah) among people" (Psalms 12:2) - to say lying words about the Holy One, blessed be He, and he became weak (makh).
And Rabbi Yitzḥak said: A person’s sentence is torn up on account of four types of actions. These are: Giving charity, crying out in prayer, a change of one’s name, and a change of one’s deeds for the better. An allusion may be found in Scripture for all of them: Giving charity, as it is written: “And charity delivers from death” (Proverbs 10:2); crying out in prayer, as it is written: “Then they cry to the Lord in their trouble, and He brings them out of their distresses” (Psalms 107:28); a change of one’s name, as it is written: “As for Sarai your wife, you shall not call her name Sarai, but Sarah shall her name be” (Genesis 17:15), and it is written there: “And I will bless her, and I will also give you a son from her” (Genesis 17:16); a change of one’s deeds for the better, as it is written: “And God saw their deeds” (Jonah 3:10), and it is written there: “And God repented of the evil, which He had said He would do to them, and He did not do it” (Jonah 3:10).