God made the world a long time ago. Why would it still need God now?
A carpenter builds a table and goes home, and the table stays a table. The planets keep moving by the laws of nature. So what does "ve'atah mechayeh et kulam," "You give life to them all," add?
The Malbim, a Bible commentator of the 1800s, says God becomes known in three ways: by making the world, by keeping it going, and by miracles. This verse has the first two. On keeping it going he writes: You are not like other makers, whose work goes on existing by itself once it is made. All of creation has existence and life only through You. The Ralbag (Rabbi Levi ben Gershom, France, 1300s) says the same about this verse.
The Malbim even answers the nature objection. It looks, he says, as if the world is run by the heavens and their fixed order. That is why the verse adds, "and the armies of the heavens bow down to You." They run things because You give them their power.
Rabbi Shneur Zalman of Liadi, the founder of Chabad, takes on the carpenter idea in the Tanya. Those who deny that God watches over the world, he says, picture God like a silversmith. Once the vessel is made, it no longer needs the smith. Their mistake is that a smith only changes the shape of silver that was already there. God makes something from nothing.
His example is the event at the end of this prayer, the splitting of the sea. A strong wind blew all night and the water stood like a wall. If God had stopped the wind for a moment, the water would have run back down. Making something from nothing is a bigger wonder than that, so the Creator's power has to be inside each created thing all the time. He even reads mechayeh, "gives life," as mehaveh, "brings into being."
The Sforno (Rabbi Ovadia Sforno, Italy, 1500s) uses this verse to explain gibor, "mighty," in a phrase from Devarim that you also say in the Amidah. Mighty, he says, means the One who keeps all existence in being.
Malbim on Nechemiah 9:6,Ralbag on Nechemiah 9:6,Tanya, Sha'ar HaYichud VeHaEmunah, chapter 2,Sforno on Devarim 10:17The Torah never says why God picked Avraham. Does this prayer?
Open Bereishit to Lech Lecha. God tells Avram to leave home and promises him huge blessings. Nothing before that says he served God or was righteous. The Ramban (Rabbi Moshe ben Nachman, Spain, 1200s) noticed. This passage, he says, does not explain the whole story. Usually, the Torah puts the promise after "walk before Me" or "if you follow My laws."
His answer is a story the Torah left out. The people of Ur Kasdim did terrible things to Avraham because of his faith in God, and he ran away from them. The Torah did not want to spend time on the beliefs of idol worshippers. Our prayer names the same place: "You brought him out of Ur Kasdim."
The Rambam (Rabbi Moshe ben Maimon, Egypt, 1100s) tells it as a search. As a small child, Avraham began to wonder day and night how the heavens could keep turning with no one turning them. No one taught him. He worked it out, argued with the people of Ur, broke their idols, and the king tried to kill him.
Now look at the order in Nechemiah. First "You chose Avram." Only later, "You found his heart faithful." The Malbim reads "found" as the result of the tests: after all the trials Avraham stood up to, his heart was found faithful, and then came the covenant.
Bereishit Rabbah stops on the word "found." Rabbi Simon says God made three finds: Avraham, David and the Jewish people. What about Noach, who "found favor"? Noach found, the midrash answers. God did not find.
So the sources do not give one reason. The Ramban and the Rambam point to what Avraham did before the Torah picks up his story. Nechemiah puts the choosing first and the finding after.
Ramban on Bereishit 12:2,Rambam, Laws of Idolatry 1:3,Malbim on Nechemiah 9:8,Bereishit Rabbah 29:3God told Avraham his children would be slaves. So why was Egypt punished for it?
In the Torah, God tells Avraham: "Your descendants will be strangers in a land that is not theirs. They will be enslaved and afflicted for four hundred years. And the nation they serve, I will judge." So Egypt only did what God said would happen. Why punish them?
The Rambam asks this question himself, in his Laws of Repentance. His answer: God never decreed that any particular Egyptian would do it. He only said that Avraham's descendants would end up enslaved. Every Egyptian who hurt the Jews could have refused.
The Ramban, writing on that verse in Bereishit, does not accept this. If God decrees something, he argues, a person who carries it out to fulfill the decree has earned a mitzvah. His own answer: Egypt went far past the decree. They threw the baby boys into the river, made the Jews' lives bitter, and planned to wipe out their name. Drowning babies is not "enslave and afflict." It is an attempt to destroy a people.
The Ramban backs this up with the word Yitro used about Egypt: they acted with malice, and that is what brought their great punishment. Then he quotes the words you just said: "because You knew that they acted with malice against them."
The Malbim reads our verse the same way. God knew they were not afflicting the Jews to carry out His decree. They added cruelty on purpose, from the wickedness of their own hearts. He finds a second reason in the next words, "You made a name for Yourself": the signs and wonders were so that people would come to know God.
So there are two answers. The Rambam: every person stays free, even inside a prophecy. The Ramban: a prophecy does not cover what you add on your own. The Kadesh Li prayer takes on a harder question, the plague of the firstborn.
Bereishit 15:13-14,Rambam, Laws of Repentance 6:5,Ramban on Bereishit 15:14,Malbim on Nechemiah 9:10