לְעֹ֘שֵׂ֤ה נִפְלָא֣וֹת גְּדֹל֣וֹת לְבַדּ֑וֹ כִּ֖י לְעוֹלָ֣ם חַסְדּֽוֹ׃
홀로 큰 기사를 행하시는 이에게 감사하라 그 인자하심이 영원함이로다
Mekhilta DeRabbi Yishmael
Variantly: "working wonders" with the fathers, and destined to work them with the sons, viz. (Michah 7:15) "As in the days when you went forth from the land of Egypt, I shall show him wonders." I will show him what I did not show the fathers. The miracles and the mighty acts that I am destined to perform for the sons are greater than those which I wrought for the fathers. And thus is it written (Psalms 22:18) "He works wonders" (as opposed to the singular "wonder" here), and (I Chronicles 16:36) "Blessed is the L–rd, the G–d of Israel, from world to world."
Midrash Tehillim
"To the conductor, for the sons of Korah, on Alamoth. This is what is said in the verse (Job 9:10), 'He performs wonders that cannot be fathomed; miracles that cannot be counted.' No person can recount all the marvels of God. As it is also said (Psalm 136:4), 'To Him who alone does great wonders.' He alone knows the miracles and wonders that He does with His people. Thus said the sons of Korah on Alamoth: 'From eternity, these are the things we have seen, and we do not know what we have seen.' Another explanation of Alamoth: We have seen the two worlds, the way of the righteous and the way of the wicked. We have seen those who trusted in their wealth, as it says (Psalm 49:7), 'Trusting in their wealth, the height of their success.' At that time, what can they do when their wealth fails them? As it also says (Zephaniah 1:18), 'Neither their silver nor their gold will be able to save them.' And a person should not say, 'My father is righteous, and through his merit, I will be saved.' Abraham did not save his son Ishmael, and Jacob did not save his brother Esau. As it says (Psalm 49:8), 'No man can redeem the life of another.' And what is 'brother'? The righteous say on that day, 'How difficult is the brother's redemption. No man can redeem the life of another.' And why is the ransom for their souls so precious? The Holy One, blessed be He, said to them, 'Did I not write to you (Exodus 23:8), 'You shall not take a bribe'? And did I not say to you, 'Give me a bribe, and I will accept it from you,' as it says (Proverbs 17:23), 'The wicked man takes a bribe in secret'? If you had given Me the bribe at that time, I would have accepted it from you. But now, I will not accept it from you, and you cannot make me accept it." As it is said (Deuteronomy 10:17), "He does not take bribes." And why (Psalms 49:8), "The redemption of their souls is costly." And what is (Psalms 37:28), "He ceases to exist forever"? One who ceases to exist on that day exists forever, as it says (Psalms 22:27), "May they live forever and not see decay." And where do they go? The sons of Korah said to Saul (1 Samuel 15:32), "Like sheep going down to the grave, where they will experience death." What is "experience death"? This teaches that the righteous descend every morning and are checked. The sons of Korah asked what the righteous are doing at that time. They said to them, "God is our refuge and strength, an ever-present help in times of trouble. In every distress that comes upon us, He is there for us." And so it says (Psalms 91:15), "He shall call upon Me and I will answer him; I will be with him in distress." Flesh and blood do not know what to do until they reach their patron. But God is not like that, He helps in times of trouble.
Midrash Tehillim
Hallelujah! Give thanks to the Lord, for He is good; His lovingkindness is everlasting. Who can speak of the mighty deeds of the Lord, or can proclaim all His praises? As it is written in Psalms 40:6, "Many wonders and deeds You have done, O Lord my God; none can compare with You. If I were to proclaim and declare them, they are more than can be numbered." Rabbi Elazar ben Pedat said, "See what is written in Psalms 136:4, 'To Him who alone does great wonders, for His lovingkindness is everlasting.' What is written after this? 'To Him who made the great lights, for His lovingkindness is everlasting.' This teaches us that sustenance is as important as the splitting of the Red Sea. Just as we cannot live without sustenance, we also cannot live without miracles and wonders. If a person were lying on a bed and a snake was on the ground before him, and when he stood up, the snake ran away, he would not know what miracle the Lord had done for him. Only God knows the wonders and miracles that He does for us. Therefore, it says in Psalms 40:6, 'Many wonders and deeds You have done, O Lord my God; none can compare with You.' It is like two men, one strong and one weak. The weak man cannot praise the strength of the strong man, for he does not know his strength. But the strong man, who knows his own strength, can praise the strength of the strong man. So we say, 'Who can speak of the mighty deeds of the Lord?' Rabbi Samuel said, 'Who can speak of the Lord's praises like us, who are engaged in Torah study day and night?'" [or Therefore, it is said, "Who can recount the mighty acts of the Lord?" Rabbi Shmuel said, "Who can recount such as we, who are occupied with Torah for all our needs."]