זִכְר֥וּ רִאשֹׁנ֖וֹת מֵעוֹלָ֑ם כִּ֣י אָנֹכִ֥י אֵל֙ וְאֵ֣ין ע֔וֹד אֱלֹהִ֖ים וְאֶ֥פֶס כָּמֽוֹנִי׃
Rashi on Isaiah
Remember the first things of old that you have seen that I am God and there is no other; I am God and there is none like Me.
Ibn Ezra on Isaiah
ראשנות The former things. The things that have passed ; the word מעולם of old is therefore added.6The literal translation of ראשנות is first things, and can be used to signify the first of the things to come as well as past events. I am God. Thus you shall know that I alone am God.