OET interlinear DEU 28:43

uW Translation Notes:

Note 1 topic: figures-of-speech / genericnoun

הַ⁠גֵּר֙ אֲשֶׁ֣ר בְּ⁠קִרְבְּ⁠ךָ֔

(Some words not found in UHB: the,sojourner which/who [is]_in,midst_of,your it_will_ascend above,you upwards, upwards, and=you(ms) sink lower lower )

Moses is not referring to a specific foreigner. He means foreigners in general. If it would be helpful to your readers, you could use an expression that would be more natural in your language. Alternate translation: [Any foreigner who lives among you]

Note 2 topic: figures-of-speech / metaphor

יַעֲלֶ֥ה עָלֶ֖י⁠ךָ מַ֣עְלָ⁠ה מָּ֑עְלָ⁠ה וְ⁠אַתָּ֥ה תֵרֵ֖ד מַ֥טָּה מָּֽטָּה

it_will_ascend above,you upwards, (Some words not found in UHB: the,sojourner which/who [is]_in,midst_of,your it_will_ascend above,you upwards, upwards, and=you(ms) sink lower lower )

Here Moses is speaking of social status as if it were physical position, with rise up above you higher and higher meaning that foreigners will gain increasing social status, wealth, and power, and descend lower and lower meaning that the Israelites will lose social status, wealth, and power. Your language may have a comparable expression that you can use in your translation, or you could state the meaning plainly. Alternate translation: [will become more and more influential than you, while you become less and less influential]