מדרש אויף ישעיהו 25:1

"and the children of Israel went out with a high hand": Scripture hereby apprises us that when the Egyptians were pursuing Israel, they vilified and execrated and cursed, while Israel exalted, praised, and sang a song of glorification to the L–rd of the war, as it is written (Psalms 149:6) "the exalting of G–d in their throats and a two-edged sword in their hands," and (Ibid. 57:6) "Exalted over the heavens is G–d, etc.", and (Isaiah 25:1) "O L–rd, You are my G–d. I will exalt you. I will praise Your name. For You wrought wondrously. Counsel from afar, enduring faith."

R. Meir says: "the L–rd will war for you": He will perform for you miracles and (acts of) strength, and you will stand still. Israel asked Moses our teacher: "What can we do?" He answered: You exalt Him and accord song, praise, grandeur and glory to the Master of wars, viz. (Psalms 149:6) "The praises of G–d in their throats", and (Ibid. 57:6) "Be exalted over the heavens, O G–d; over all the earth, Your glory", and (Isaiah 25:1) "O L–rd, You are my G–d. I will exalt You. I will praise Your name for You wrought wondrously. Counsels from afar, enduring in faith."

"To the conductor, a song of praise. Shout to God, all the earth, sing the glory of His name. This is what is written in Zephaniah 3:9: 'For then I will convert the nations to a clear language, that they may all call upon the name of the Lord, to serve Him with one accord.' And what is His service? Prayer, as Moses says in Deuteronomy 11:13: 'And it shall come to pass if you will diligently listen to My commandments.' And what is meant by serving Him in this world? It is prayer, as it says in Psalms 100:2: 'Serve the Lord with gladness.' And it says in Psalms 95:1: 'Come, let us sing joyfully to the Lord; let us acclaim the rock of our salvation.' And likewise, Darius says to Daniel in Daniel 6:21: 'Your God whom you serve continually.' And what is meant by 'serve continually'? It is prayer, as it says in Daniel 6:11: 'He prayed three times a day.' Let us say to God: 'How awesome are Your deeds.' And as Isaiah says, just as they said to Him at the sea in Exodus 15:11: 'Who is like You, O Lord, among the heavenly powers?' So too, in Isaiah 25:1, it says, 'O Lord, You are my God, I will exalt You; I will praise Your name.' And now I say to you, 'How awesome are Your deeds,' as Isaiah says in Isaiah 66:23: 'And it shall be, that from new moon to new moon, and from Sabbath to Sabbath, all flesh shall come to worship before Me.' And it says in Psalms 86:9: 'All the nations that You have made shall come and bow down before You, O Lord, and shall glorify Your name.' And not just the nations, but all the earth will bow down to You, because there is no sovereignty over flesh and blood. And the sons of Korah say in Psalms 47:2: 'Clap your hands, all you nations; shout to God with cries of joy. For the Lord Most High is awesome, a great King over all the earth.' At that time, as it says in Zechariah 14:9, 'And the Lord shall be King over all the earth; in that day shall the Lord be one and His name one.'"