We are now in Tehilim 78, 53: וַיַּנְחֵ֣ם לָ֭בֶטַח וְלֹ֣א פָחָ֑דוּ וְאֶת־א֝וֹיְבֵיהֶ֗ם כִּסָּ֥ה הַיָּֽם God guided them in security, and they were not afraid. And their enemies were covered by the ocean. David Hamelech is talking about the Keriat Yam Suf. I saw two different approaches to explain this pasuk. One is that God directed them towards bitachon and they weren't afraid. At Keriat Yam Suf, the Jewish people were told not to pray. Hashem said, “ Why are you crying out to me? Tell the Jewish people to travel into the ocean.” They traveled into the ocean, the water came up to their noses and then the sea split. The Or HaChaim HaKadosh explains, as many others do, that this is the source for a concept that there are times where prayer does not work and Bitachon does. וַיַּנְחֵ֣ם לָ֭בֶטַח That's what it means that God guided them towards bitachon. They weren't afraid, and therefore the sea split. How exactly is it that Bitachon works when Tefila doesn't? One answer is that bitachon, at the deepest level, reaches what we call En Od Milevado/There's nothing else but Hashem, and that cancels out all judgements and prosecutions. Rav Chaim Volozhin famously discusses this power in his sefer Nefesh HaChaim. Tefila works within the framework of reward and punishment. Of course, prayer can arouse merit, but at the end of the day, we're in the world of reward and punishment. However, the power of bitachon goes above that. Even if we say, Why should He split the sea? They're both idol worshipers etc , Bitachon is able to overcome that. Therefore, God put them in a situation that forced them into Bitachon so that they would have the merit for the sea to split. That's what וַיַּנְחֵ֣ם לָ֭בֶטַח means, God directed them towards bitachon. A simpler explanation is that God directed them in a secure fashion. God put them in a situation where there was no fear. The Radak explains that even though it says, ‘ They were very scared and they cried out to God,’ that fear was for just a moment, because immediately thereafter, the sea was split and the enemies were covered. The fear did not last. This is an important concept that connects to what we started off with, that the fear that a person has, if it does the job arousing bitachon, will last for just a second. That fear is beneficial. The Gemara in Masechet Berachot 55A tells us, “ A bad dream, the pain is heals. ” That means when a person has a bad dream, this is an accomplishment, because he was scared. So the fear that came about through the bad dream caused that there was no bad in the end. It protected the person from the bad of the dream. The Steipler applies this in one of his letters. Sometimes people have a test scheduled, and they get all scared because of the test. And sometimes there’s a mistake. Someone recently told me that they went to a doctor for an EKG, and somehow the machine was upside down and the doctor read it wrong, and they thought he was having a heart attack. They wanted to send him to an emergency room. He called his cardiologist and it turned out that it was just a scare. So, this is an important way of looking at scares in life, that they're just there to be scares. And that's this concept that Hashem guides us. וַיַּנְחֵ֣ם לָ֭בֶטַח He guides us towards getting out of our problem by getting us scared, and from on in, as it says at Keriat Yam Suf, וְלֹ֣א פָחָ֑דוּ they were not afraid.