וְהֵבֵאתִ֤י אֶת־הַשְּׁלִשִׁית֙ בָּאֵ֔שׁ וּצְרַפְתִּים֙ כִּצְרֹ֣ף אֶת־הַכֶּ֔סֶף וּבְחַנְתִּ֖ים כִּבְחֹ֣ן אֶת־הַזָּהָ֑ב ה֣וּא ׀ יִקְרָ֣א בִשְׁמִ֗י וַֽאֲנִי֙ אֶעֱנֶ֣ה אֹת֔וֹ אָמַ֙רְתִּי֙ עַמִּ֣י ה֔וּא וְה֥וּא יֹאמַ֖ר יְהוָ֥ה אֱלֹהָֽי׃ (ס)
At dadalhin ko ang ikatlong bahagi sa apoy, at dadalisayin ko sila gaya ng pagdadalisay sa pilak, at susubukin ko sila gaya ng pagsubok sa ginto. Tatawag siya sa aking pangalan, at sasagutin ko siya. Sasabihin ko: “Siya ay aking bayan,” at sasabihin niya: “Ang Walang-Hanggan ang aking Diyos.”
Rashi
And I will bring the third in fire And I will bring the third in straits in the smelting-pot of fire (Jonathan), so that some of the proselytes should bear the birth pang of the Messiah and the war of Gog and Magog with Israel. From there they shall be tested [as to] whether [or not] they are true proselytes. Then, many of those who previously converted to Judaism shall return to their pre- conversion customs and join Gog. We find [this idea] in the Aggadah (Avodah Zarah 3b; Midrash Psalms 2:5, footnote 29).
Rashi
and he shall say, “The Lord...” When he prays, he will pray to the Lord and not to his previous deity.