הַגֵּר֙ אֲשֶׁ֣ר בְּקִרְבְּךָ֔ יַעֲלֶ֥ה עָלֶ֖יךָ מַ֣עְלָה מָּ֑עְלָה וְאַתָּ֥ה תֵרֵ֖ד מַ֥טָּה מָּֽטָּה׃
너의 중에 우거하는 이방인은 점점 높아져서 네 위에 뛰어나고 너는 점점 낮아질 것이며
Ibn Ezra
higher and higher The adverb is doubled, possibly to indicate that there will be no one higher than he or that the rise will be continuous. The same can be said of lower and lower. But it may be that the repetition indicates a simple intensification.
Rav Hirsch
הגר. Und all dieses Missgeschick trifft dich ganz individuell. Auf demselben Boden, auf dem du bis zur völligen Verödung zu Grunde gehst, kommt der Fremde neben dir empor.