דְּרָשׁ־נָ֤א בַעֲדֵ֙נוּ֙ אֶת־יְהוָ֔ה כִּ֛י נְבוּכַדְרֶאצַּ֥ר מֶֽלֶךְ־בָּבֶ֖ל נִלְחָ֣ם עָלֵ֑ינוּ אוּלַי֩ יַעֲשֶׂ֨ה יְהוָ֤ה אוֹתָ֙נוּ֙ כְּכָל־נִפְלְאֹתָ֔יו וְיַעֲלֶ֖ה מֵעָלֵֽינוּ׃ (ס)
'Fragen Sie den Herrn nach uns, ich bitte Sie. denn Nebukadrezar, der König von Babel, führt Krieg gegen uns; Vielleicht wird der Herr nach all seinen wunderbaren Werken mit uns umgehen, damit er von uns aufsteigt.'
Rashbam
וחובר חבר, the tone-sign is on the letter ח just as it is in the word חרב, cherev, both in Jeremiah 21,2 and in Samuel II 11,25, this is proven by the plural mode in Psalms 56,8 being חברים, chavarim, with the emphasis on the letter ר just as in melech- melachim, and the vowel kametz, instead of tzeyreh.. If the emphasis were on the letter ב, i.e. on the last syllable as in חבר, (friend) in Psalms 119,63 Genesis 32,26 ירך as well as in the words גדר, gader in Numbers 22,24 where the emphasis is on the letter ד, then the plural mode would not have the vowel kametz under the second consonant in Psalms 56,8 but would have the vowel tzeyreh.
Rashi
I will cause [them] to beg you in time of evil with the enemy. When evil befalls them, they will beg you to supplicate God for mercy upon them, for example, Zedekiah said to him, (below 21:2) “Beseech God now on our behalf, etc.” Another explanation. Nebuzaradan will beg you (below 40:4), “If it pleases you to come with me to Babylon.”