Why the second דֹּֽר in Exodus 3:15?

2018-07-08 01:44:31

I'm a little confused by the second דֹּֽר in this verse, which ends the verse.

וַיֹּאמֶר֩ ע֨וֹד אֱלֹהִ֜ים אֶל־מֹשֶׁ֗ה כֹּֽה־תֹאמַר֮ אֶל־בְּנֵ֣י

יִשְׂרָאֵל֒ יְהוָ֞ה אֱלֹהֵ֣י אֲבֹתֵיכֶ֗ם אֱלֹהֵ֨י אַבְרָהָ֜ם אֱלֹהֵ֥י

יִצְחָ֛ק וֵאלֹהֵ֥י יַעֲקֹ֖ב שְׁלָחַ֣נִי אֲלֵיכֶ֑ם זֶה־שְּׁמִ֣י

לְעֹלָ֔ם וְזֶ֥ה זִכְרִ֖י לְדֹ֥ר דֹּֽר׃

And God saith again unto Moses, `Thus dost thou say unto the sons of Israel, Jehovah, God of your fathers, God of Abraham, God of Isaac, and God of Jacob, hath sent me unto you; this [is] My name -- to the age, and this My memorial, to generation -- generation. (YLT)

(Exodus 3:5)

You can see that the YLT adds an em-dash. But it still isn't clear how to interpret the second דֹּֽר. More idiomatic would be "from generation to generation", but that clearly isn't written here.

How would you translate the phrase לְדֹ֥ר דֹּֽר? What do you understand it to mean?