Tanach · Rishonim on Tanach · Ibn Ezra · Torah

Ibn Ezra on Genesis 13:6/אבן עזרא על בראשית י״ג:ו׳

איחדו. לשון שנים, ורבים, "ויענו כל העם יחדו" (שמות יט ח), והיא מלה זרה, ואין פירושו כמו יחד, רק כמו יחיד:
1TOGETHER. Yachdav (together) can refer to two (as in our verse) or to many, as in And all the people answered together (yachdav) (Ex. 19:8). This word does not follow the rules of Hebrew grammar.9 between the chet and the vav as do all other similar plural forms (Weiser). Yachdav is not synonymous with yachad (together). Yachdav means acting like one person.10 (yachdav) (Ex. 19:8), which means that all the people answered as if they were one person. Yachad implies two people acting at the same time, but each one by himself (Weiser).