בָּח֛וֹן נְתַתִּ֥יךָ בְעַמִּ֖י מִבְצָ֑ר וְתֵדַ֕ע וּבָחַנְתָּ֖ אֶת־דַּרְכָּֽם׃
אַ פּרוּװער האָב איך דיך געמאַכט, אַ גאָלדטיגל צװישן מײַן פֿאָלק, כּדי זאָלסט געװאָר װערן און פּרוּװן זײער װעג.
Rashi
I have made you the strong one This was said to Jeremiah. I have made you the strong one in their midst, and you shall know and test their way, that he tested them and they will not heed. בחון is an expression of strength. Comp. (Isa. 32:14) “rampart and tower (בחן),” also (ibid. 23:13) “they erected its towers (בחוניו).”