לֵ֣ךְ וְאָֽסַפְתָּ֞ אֶת־זִקְנֵ֣י יִשְׂרָאֵ֗ל וְאָמַרְתָּ֤ אֲלֵהֶם֙ יְהוָ֞ה אֱלֹהֵ֤י אֲבֹֽתֵיכֶם֙ נִרְאָ֣ה אֵלַ֔י אֱלֹהֵ֧י אַבְרָהָ֛ם יִצְחָ֥ק וְיַעֲקֹ֖ב לֵאמֹ֑ר פָּקֹ֤ד פָּקַ֙דְתִּי֙ אֶתְכֶ֔ם וְאֶת־הֶעָשׂ֥וּי לָכֶ֖ם בְּמִצְרָֽיִם׃
너는 가서 이스라엘 장로들을 모으고 그들에게 이르기를 여호와 너희 조상의 하나님 곧 아브라함과 이삭과 야곱의 하나님이 내게 나타나 이르시되 내가 실로 너희를 권고하여 너희가 애굽에서 당한 일을 보았노라
Rashi
את זקני ישראל THE ELDERS OF ISRAEL, those singled out to attend meetings, (i. e. the leaders) (cf. Yoma 28b). If, however, you should say that the text means old men in the ordinary sense I ask: How was it possible for him to gather all the old men amongst a male population of 600,000?
Or HaChaim
לך ואספת את זקני ישראל, "Go and gather the elders of lsrael,etc." The reason that G'd repeats here again what Moses is to say maybe that when Moses would arrive in Egypt he was to tell the entire people that he had come as messenger from G'd. After that he would assemble the elders and tell them the nature of his mission, namely that G'd had remembered His people and was about to redeem them.