Hinei El Yeshuati

Good Morning!

I just want to copy and paste this :

הִנֵּה אֵל יְשׁוּעָתִי, אֶבְטַח וְלֹא אֶפְחָד, כִּי עָזִּי וְזִמְרָת יָהּ יְיָ, וַיְהִי לִי לִישׁוּעָה. וּשְׁאַבְתֶּם מַֽיִם בְּשָׂשׂוֹן, מִמַּעַיְנֵי הַיְשׁוּעָה. לַייָ הַיְשׁוּעָה, עַל עַמְּךָ בִרְכָתֶֽךָ סֶּֽלָה. יְיָ צְבָאוֹת עִמָּֽנוּ, מִשְׂגָּב לָנוּ אֱלֹהֵי יַעֲקֹב סֶֽלָה. יְיָ צְבָאוֹת, אַשְרֵי אָדָם בֹּטֵֽחַ בָּךְ. יְיָ הוֹשִֽׁיעָה, הַמֶּֽלֶךְ יַעֲנֵֽנוּ בְיוֹם קָרְאֵֽנוּ. 

לַיְּהוּדִים הָיְתָה אוֹרָה וְשִׂמְחָה וְשָׂשׂוֹן וִיקָר. כֵּן תִּהְיֶה לָּֽנוּ. כּוֹס יְשׁוּעוֹת אֶשָּׂא, וּבְשֵׁם יְיָ אֶקְרָא.

Hinei El yeshuati, evtach velo efchad, ki ozi vezimrat yah, Adonai vayehili liyeshuah. Ushavtem mayim besasson mima’anei hayeshuah. La'Adonai hayeshuah, al amcha virchatecha, selah. Adonai tzeva'ot imanu, misgav lanu, Elohay Ya'akov, selah. Adonai tzeva'ot, ashray adam botayach bach. Adonai hoshi'ah, hamelech ya'anaynu veyom koraynu. Layehudim hayetah orah vesimcha vesason vikar. Kain tehiyeh lanu. Kos yeshuot esa uveshaym Adonai ekrah.


Behold, God is my savior, I will trust God and not be afraid, for my strong faith and song of praise for God will be my salvation. You will draw water joyously from the wellsprings of salvation. Salvation is the God's; may Your blessing rest upon Your people. God of the heavenly armies is with us; the Lord of Ya'akov is a fortress protecting us. God of the heavenly armies, happy is the individual who trusts You. God, redeem us! The King will answer us on the day we call God. The Jews had light, happiness, joy and honor; may we have the same. I will raise the cup of salvation and call out in the name of the God.

Source

**why they're using Adonai instead of Yeshua ?