הַ֥לְלוּ יָ֨הּ ׀ שִׁ֣ירוּ לַֽ֭יהוָה שִׁ֣יר חָדָ֑שׁ תְּ֝הִלָּת֗וֹ בִּקְהַ֥ל חֲסִידִֽים׃
Alleluia! Cantate al Signore un canto nuovo, la sua lode nell'assemblea dei fedeli.
Mekhilta DeRabbi Yishmael
The tenth (song) in time to come, viz. (Isaiah 42;10) "Sing to the L–rd a new song, His praise from the end of the earth (Ibid. 48:42) "Say: The L–rd has redeemed His servant Jacob. All of the (other) songs are denominated in the feminine ("zoth"). Just as a female bears (and then travails again), so, the past salivations were followed by subjugation. But the future (ultimate) redemption will not be followed by subjugation — wherefore it is denominated in the masculine ("zeh" [viz. Isaiah 26:1]). As it is written (Jeremiah 30:6) "Ask now and see if a male has ever given birth. Why, then, do I see that every man puts his hands upon his loins (as a woman giving birth?") For just as a male does not bear (and thus travail), so, the future redemption will not be followed by subjugation. As it is written (Isaiah 45:17) "Israel will be saved by the L–rd, an eternal salvation. You will not be ashamed or abashed forever."
Midrash Tanchuma Buber
(Numb. 8:5-6:) THEN THE LORD SPOKE <UNTO MOSES SAYING>: TAKE THE LEVITES. Let our master instruct us: How many strings were on the harp which the Levites played?32Tanh. Numb. 3:7; Numb. R. 15:11} Thus did R. Judah teach:33T‘Arakh. 2:7; ‘Arakh. 13b. There were seven (shB') strings on that harp, as stated (in Ps. 16:11): IN YOUR PRESENCE THERE IS FULLNESS (rt.: SB')34Since the S here is a Hebrew sin in the unpointed text SB‘ is identical with ShB‘. OF JOY. Do not read <the word pointed as> sova' ("fullness") but <as> sheva' ("seven"). So also did David say (in Ps. 119:164): WITH SEVEN A DAY DO I PRAISE YOU.35M. Pss. 81:3; PR 21:1. A more traditional translation of Ps. 119:164 would read: SEVEN TIMES A DAY DO I PRAISE YOU. Moreover, in the days of the Messiah it will be made with eight <strings>. Therefore David has stated concerning the instrumental music (in Ps. 6:1): FOR THE LEADER; WITH INSTRUMENTAL MUSIC ON THE EIGHT-STRINGED HARP. Furthermore in the age to come it will be made of ten <strings> as stated {SING TO GOD A NEW SONG…. }36No Psalm has exactly these words but SING TO THE LORD A NEW SONG…. appears in Pss. 96:1; 98:1; and 149:1; as well as in Is. 42:10. [(in Ps. 144:9): O GOD, LET ME SING TO YOU A NEW SONG; LET ME PLAY FOR YOU ON A TEN-STRINGED HARP.] And who ordained them? Samuel and David. It is so stated (in I Chron. 9:22): DAVID AND SAMUEL THE SEER ORDAINED THEM IN THEIR OFFICE OF TRUST. Moreover, they <were the ones who> set up the divisions for singing. Now the Levites would stand on their platform and sing before the one who spoke for the world to come into being. See the love with which the Holy One loved the Levites. So from the beginning the Holy One chose them to serve him. Therefore, the Holy One said to Moses. Levites are extremely dear to me. Take them in my name for a position of authority. {Thus it is stated:} [From where is it shown? From what they read on the matter] (in Numb. 8:6): TAKE THE LEVITES.
Midrash Tehillim
"Hallelujah, sing to the Lord a new song," says Isaiah (Isaiah 43:18-19), "Do not remember the former things." (Isaiah 43:18-19) "The wild beasts will honor Me" (Isaiah 43:20). "This people have I formed for Myself" (Isaiah 43:21). The Almighty says: Just as I have made all things new, so shall you sing a new song to Me, as it is said: "Sing unto the Lord a new song." (Psalm 149:1) And who are these pious ones? They are the people of Israel. As it is written, "He raised up a horn of salvation for us in the house of His servant David...to show mercy to our fathers and to remember His holy covenant, the oath which He swore to Abraham our father." (Psalms 148:14) Whenever Israel sees the Almighty, they become pious. They became pious when they saw Him at the Red Sea and sang a song, as it is said, "Then Moses and the children of Israel sang this song to the Lord." (Exodus 15:1) They became righteous when they saw Him at Sinai, as it is said, "He stores up sound wisdom for the upright." (Proverbs 2:7) And what does it say there? "He kissed me," etc. They became righteous when they saw Him at the Tent of Meeting, as it is said, "And Moses and Aaron went into the Tent of Meeting and came out and blessed the people. Then the glory of the Lord appeared to all the people, and fire came out from before the Lord and consumed the burnt offering and the fat on the altar. When all the people saw it, they shouted and fell on their faces." (Leviticus 9:23-24) As it is said, "Rejoice, O ye righteous," etc. When they see Him in the world to come, they become pious, as it is said, "Let the praises of God be in the congregation of the pious." (Psalm 149:1) And they rejoice and are exceedingly glad in His presence, in the fire, hail, snow, and smoke, as it is said, "Praise the Lord from the earth," etc. (Psalm 148:7-14) From here we learn that there is nothing evil in heaven, neither fire, hail, snow, nor smoke, but they are from the earth, as it is said, "Praise the Lord from the earth." (Psalm 148:7) And so it is said, "No evil shall befall you." (Psalm 91:10) There is no evil in His presence. All evil is on earth. But if so, why does it say, "And the Lord rained upon Sodom and Gomorrah brimstone and fire from the Lord out of heaven?" (Genesis 19:24) The Almighty said, a decree shall come from the heavens and below it shall be done with fire. A stormy wind does his bidding, and even the hills and all the high places tremble. David said, the mountains will be weighed down by him who knows their weight." As it says (Isaiah 40:12), "Who has measured the waters in the hollow of His hand, and marked off the heavens with a span." And so it says (Psalm 147:4), "He counts the number of the stars, He calls them all by their names." Therefore it is said, "The heavens and the earth" (Genesis 1:1), to teach that God created everything. David said, "Everything praises God." If a person does not want to give thanks and praise to his Creator, even a crawling creature or a bird with wings thanks Him, and it is not fitting for him. And so it says (Isaiah 43:20), "The beasts of the field shall honor Me." Therefore it is said, "The wild beasts and all cattle" (Psalm 148:10). The kings of the earth and all nations, princes, and all judges of the earth should have said, "The dragons and all deeps" (Psalm 148:7) first, and afterward, "Kings of the earth and all people" (Psalm 148:11), up to "Young men and maidens" (Psalm 148:12). What are "young men"? They are the same as "young" and "youth." But the Holy One, blessed be He, said, "The elders who are youthful." As it says (Psalm 103:5), "Your youth is renewed like the eagle's," and (Isaiah 40:31), "But they that wait for the Lord shall renew their strength; they shall mount up with wings as eagles." Therefore it says, "The elders with the young" (Psalm 148:12). "Let them praise the name of the Lord, for His name alone is exalted" (Psalm 148:13). But haven't we already said, "Let them praise the name of the Lord"? In the custom of the world, when a mortal king sits enthroned, he has chamberlains who accompany him in the procession of his reign, and when they sing, they also honor him. But the Holy One, blessed be He, is not like this; He has no chamberlains or ministers. As it says (Deuteronomy 3:24), "Who is like unto Thee, O Lord, among the gods? Who is like Thee, glorious in holiness, fearful in praises, doing wonders?" None other than He performs His work; He alone suspends the earth. As it says (Isaiah 44:24), "I, the Lord, am He that makes all things, that stretches forth the heavens alone, that spreads abroad the earth by Myself." Therefore He praises Himself alone, as it says, "Let them praise the name of the Lord, for His name alone is exalted." As it is written, "He has raised up a horn for his people... Sing to the Lord a new song." And it says in the giving of the Torah (Psalm 138:4), "All the kings of the earth will praise you, Lord, when they hear what you have decreed." Did they really hear and want to accept your Torah? No. Until Michah the Morashtite came and explained, as it says (Michah 5:14), "And I will execute vengeance in anger and fury upon the nations that have not hearkened." This teaches that they heard but did not accept. Then David came and gave thanks, as it says (Psalm 136:15), "You are the God who performs wonders..." David said, "I give thanks to you for the wonders you have done in the world, by making your Torah known to all the nations in the world, even though they did not want to accept it." This verse does not refer to strength, but to the Torah, as it says (Exodus 15:2), "The Lord is my strength and my song." Rabbi Abbahu said that it was revealed before the Holy One, blessed be He, that the nations of the world would not accept the Torah. So why did He offer it to them? This is God's way: He offers His creations what they cannot accept, and only then removes it from them. For the Holy One, blessed be He, does not come into conflict with His creations. Therefore it is said, "For high is His name alone is exalted."