The psalm says God never sleeps. So why do other psalms tell Him to wake up?
Tehillim (the book of Psalms) 121:4 says the Guardian of Israel "does not doze and does not sleep." But Tehillim 44:24 cries out: "Wake up, why do You sleep, Hashem?" And Tehillim 78:65 says that Hashem "woke like someone asleep." Same book, opposite pictures.
The Gemara tells of a time this clash was real. In the Temple, the Levites stood on the platform every day and said, "Wake up, why do You sleep, Hashem?" They were called the awakeners. Yochanan the High Priest stopped them. His objection: "Is there sleep before God? Isn't it already said, 'The Guardian of Israel does not doze and does not sleep'?"
The same passage then says when that verse does fit: when Israel is in pain and the other nations are comfortable.
Midrash Tehillim (a collection of rabbinic teachings on Tehillim) states it flatly: "Is there sleep above? God forbid."
The Malbim adds what makes this Guardian different from a human one. A human guard gets tired. Even one who fights it must eventually sleep, and someone else has to take his place. Here, no one takes over.
None of this explains why the pain happens. These sources deal with the wording, and the bigger question stays open.
Tehillim 121:4, 44:24 and 78:65,Sotah 48a,Midrash Tehillim 121,Malbim on Tehillim 121:4Why does the psalm open with a question about where help comes from?
Verse 1 reads: "I lift my eyes to the mountains. From where will my help come?" Verse 2 answers: "My help comes from Hashem, maker of heaven and earth." But what is the writer doing in verse 1? The commentators picture it differently.
Ibn Ezra says it is what people do when a city is under siege: they look out, hoping helpers will come. He ties this to verse 3, since every city under siege has watchmen on its walls at night.
Radak pictures someone climbing a mountain to look far and wide for helpers. For him the writer is saying that looking at mountains will not help. The Meiri (Rabbi Menachem Meiri, a Gemara and Bible commentator in southern France, about 1300) agrees. The writer admits that no human helper can match the strength of the enemies.
The Malbim reads it differently. Help has already come, suddenly, from above the mountaintops. The writer looks up to see where it came from, and sees that it did not come from beyond the mountains. It came from Hashem.
A midrash in Bereshit Rabbah (a collection of rabbinic teachings on Bereishit) gives the mountains a face. It reads "heharim," the mountains, as "hahorim," the parents: I lift my eyes to my parents, my teachers and those who raised me. It says Yaakov is speaking, leaving home with nothing.
So the mountains are a lookout, a false hope, a place help has already come from, or the people who raised you. The sources do not choose one. They agree on verse 2.
Ibn Ezra on Tehillim 121:1 and 121:3,Radak on Tehillim 121:1,Meiri on Tehillim 121:1,Malbim on Tehillim 121:1,Bereshit Rabbah 68:2Does "Hashem will guard you from all harm" mean nothing bad will happen to me?
Verse 7 says: "Hashem will guard you from all harm. He will guard your soul." Anyone who has seen a person get sick or hurt has a reason to ask what that means. The commentators do not all read it the same way.
Radak reads it concretely: people and wild animals will not hurt you, and illness will not end your life. He reads the psalm as comfort for the Jewish people in exile. Ibn Ezra says "harm" covers whatever happens to a person from outside and from inside.
The Malbim splits the verse in two. "Harm" is about the body: Hashem guards it from every kind of trouble in the world. "Your soul" is something else: Hashem guards it from sin.
Bereshit Rabbah gives the harm names. "From all harm" means from Esav and Lavan, the two men who threatened Yaakov. "Your soul" means from the angel of death. But the Torah shows that Yaakov did face both men. He fled from Esav, then worked for Lavan for twenty years. The midrash still applies the verse to him.
The sources do not agree on one meaning, and none of them settles why good people still suffer. That part stays open.
Radak on Tehillim 121:7,Ibn Ezra on Tehillim 121:7,Malbim on Tehillim 121:7,Bereshit Rabbah 68:2,Bereishit 27:43 and 31:41