Unifying the Name of God (Yichud Hashem)/ to profess the uniy of God/ (declaration of the unity of God)
To proclaim the Lord as one.
("Happy are we, how good is our portion, how pleasant our lot, and how beautiful our inheritance. Happy are we that we unify Your name and say: Hear, O Israel, the Lord our God, the Lord is one" — Shacharit prayer, and likewise: "And he likened Abraham to this, for Abraham began to unify the Lord in the world and to publicize His divinity, and his words bore fruit" — Rabbenu Bahya, Leviticus, chapter 23.)
Translation
Expression (Hebrew)
יִיחֵד אֶת ה' (יִיחוּד הַשֵּׁם)
Definition (Hebrew)
לְהַכְרִיז עַל ה' כְּאֵל אֶחָד.
("אַשְׁרֵינוּ, מָה טוֹב חֶלְקֵנוּ וּמַה נָעִים גּוֹרָלֵנוּ וּמָה יָפֶה יְרֻשָּׁתֵנוּ. אַשְׁרֵינוּ שֶׁאָנוּ מְיַחֲדִים שִׁמְךָ וְאוֹמְרִים: שְׁמַע יִשְׂרָאֵל ה' אֱלֹהֵינוּ ה' אֶחָד-תְּפִלַּת שַׁחֲרִית, וְכֵן:"וְהִמְשִׁיל בּוֹ אֶת אַבְרָהָם כִּי כֵן אַבְרָהָם הִתְחִיל לְיַחֵד ה' בָּעוֹלָם וּלְפַרְסֵם אֱלֹהוּתוֹ, וְהָיוּ דְּבָרָיו עוֹשִׂין פֵּרוֹת"- רַבֵּנוּ בְּחַיֵּי וַיִּקְרָא פֶּרֶק כג מ)