Midrash su Salmi 27:1

How important He is to us, David tells us in the verse: The Lord is my light and my salvation; whom shall I fear? (Ps. 27:1). When did David utter this verse? While fighting against the Amalekite bands. He fought against them at night and slew them, as it is said: And David smote them from the twilight even unto the evening (I Sam. 30:17). Who indeed lit the shooting stars and sent the lightning for them? R. Eleazar the son of Pedat was of the opinion that this verse refers to the war waged against the Egyptians after they pursued the Israelites. Observe what is written there: And there was the cloud and the darkness here, yet it gave light by night there (Exod. 14:20). R. Oshaya declared: When the Israelites saw the light they cried out: The Lord is my light and my salvation; whom shall I fear? The Holy One, blessed be He, said to Israel: If you light lamps before Me, I will illumine the world in your behalf with a great light, as it is said: But the Lord shall be unto thee an everlasting light, and thy God thy glory (Isa. 16:19).

It is taught: Until a person sins, he is given terror and fear and creatures are afraid of him. Once he sins, terror and fear are imposed upon him and he is afraid of others. Know that it is so, as Rabbi said: Until Adam the first man sinned, he would hear the voice of divine speech while standing on his feet and was not afraid. Once he sinned, when he heard the voice of divine speech, he was afraid and hid, as it is stated: “I heard your voice…” (Genesis 3:10); “the man hid” (Genesis 3:8). Rabbi Aivu said: At that moment the height of Adam’s stature diminished and it became only one hundred cubits. Rabbi Levi said: Until Adam the first man sinned, he would hear a soothing divine voice. Once he sinned, he would hear a thundering voice.
Until Israel sinned, they would see⁹⁰They would see the glory of God. through the consecutive partitions and they were not afraid, shocked, and frightened. Once they sinned, they could not have even looked at an intermediary. That is what is written: “They saw the skin of Moses’s face, that it was radiant” (Exodus 34:35), and it is written: “They feared to approach him” (Exodus 34:30).
Rabbi Pinḥas and Rabbi Avun said in the name of Rabbi Ḥanin: Even the intermediary was affected with them in that transgression. Until Israel sinned, what is written? “The kings of armies flee again and again” (Psalms 68:13). Rabbi Aivu said: “Angels [malakhei] of armies” is not written, but rather “kings [malkhei] of armies”—the kings of the angels. Which is they? They are Mikhael and Gavriel. They were unable to look at Moses’s face. Once [the Israelites] sinned, [Moses] was unable to look even at the most ordinary among [the angels]. That is what is written: “For I was in dread of the wrath and the fury” (Deuteronomy 9:19).
Until that incident befell David,⁹¹The reference is to David’s sin with Batsheva. See II Samuel chap. 11. it is written: “The Lord is my light and my salvation; whom shall I fear?” (Psalms 27:1). Once it befell him, it is written: “I will come upon him, and he will be weary and discouraged” (II Samuel 17:2). Until Solomon sinned, he would subjugate sharim and sharot.⁹²The meaning of these words is unclear. Perhaps it may be read sarim and sarot, in which case it means princes and princesses. Alternatively, some suggest that the text should read shedim veshedot, male and female demons. That is the text found in a parallel midrash in Yalkut Shimoni Tehillim 795. That is what is written: “I acquired for myself male and female singers [sharim vesharot]” (Ecclesiastes 2:8), male singers [meshorerim] and female singers [meshorerot];⁹³In this phrase, the midrash has merely translated the terms used in the verse to more familiar forms of the words. “and the pleasures of people” (Ecclesiastes 2:8), bathhouses; “chests [shida] and wagons [shidot]” (Ecclesiastes 2:8), male and female demons [sheda veshedta] who would heat them. Once he sinned, he appointed for him “sixty valiant men…from the valiant of Israel” and positioned them to protect his bed. That is what is written: “Behold the bed…each armed with a sword,” because he was afraid of the spirits.

... Teach us, oh master – may one light a lamp for personal use from the Channukah lights? Our masters taught us – R’ Acha said in the name of Rav ‘it is forbidden to light a lamp to use from the Channukah lights, but one may light a Channukah light from a Channukah light.’ From where did they learn that it is permissible to light a Channukah light (from it)? R’ Yaakov ben Aba said, they learned it from the menorah that was in the Holy of Holies, as our rabbis taught that if one found they had gone out, they should be cleaned out and re-lit from those that are still lit. (Tamid 3) If we would relight an extinguished lamp of the menorah, which was placed in the innermost sanctum, from the lamps still burning all the more so it is permissible to light a Channukah light from the lights still burning.’ The Holy One said, just as in this world lamps were lit in the Holy of Holies, so too I will do when I rebuild Jerusalem. From where do we know this? From the words of the prophet “And it shall come to pass on that day, that I will search Jerusalem with candles…” (Tzephaniah 1:12)