וְהָיָ֨ה לְא֥וֹת וּלְעֵ֛ד לַֽיהוָ֥ה צְבָא֖וֹת בְּאֶ֣רֶץ מִצְרָ֑יִם כִּֽי־יִצְעֲק֤וּ אֶל־יְהוָה֙ מִפְּנֵ֣י לֹֽחֲצִ֔ים וְיִשְׁלַ֥ח לָהֶ֛ם מוֹשִׁ֥יעַ וָרָ֖ב וְהִצִּילָֽם׃
這要在埃及地為萬軍的永恆者作記號和見證；因為他們必因欺壓者的緣故向永恆者哀求，祂就必差遣一位拯救者和首領給他們，拯救他們。
Rashi
And it shall be The altar shall be for a sign and for a witness between them and the Omnipresent.
Ibn Ezra
They shall cry unto the Lord because of the oppressors, etc. Whosoever will be in trouble will come thither to bring his offering.