וַיַּעַבְד֤וּ הָעָם֙ אֶת־יְהוָ֔ה כֹּ֖ל יְמֵ֣י יְהוֹשֻׁ֑עַ וְכֹ֣ל ׀ יְמֵ֣י הַזְּקֵנִ֗ים אֲשֶׁ֨ר הֶאֱרִ֤יכוּ יָמִים֙ אַחֲרֵ֣י יְהוֹשׁ֔וּעַ אֲשֶׁ֣ר רָא֗וּ אֵ֣ת כָּל־מַעֲשֵׂ֤ה יְהוָה֙ הַגָּד֔וֹל אֲשֶׁ֥ר עָשָׂ֖ה לְיִשְׂרָאֵֽל׃
백성이 여호수아의 사는 날 동안과 여호수아 뒤에 생존한 장로들 곧 여호와께서 이스라엘을 위하여 행하신 모든 큰 일을 본 자의 사는 날 동안에 여호와를 섬겼더라
Rashi
אחרי מותי כי השחת תשחתון [FOR I KNOW THAT] AFTER MY DEATH YE WILL UTTERLY CORRUPT YOURSELVES — But, you see, as a matter of fact, that all the days of Joshua they did not corrupt themselves, for it states, (Judges 2:7) “And the people served the Lord all the days of Joshua”?! (How, then, could Moses say that they would corrupt themselves after his death, by which he evidently meant immediately after his death, cf. v. 16)? But we may derive from here that one’s pupil should be as dear to him as his own self: — it appeared to Moses that so long as Joshua would live it would be as though he himself would be living (he thus alluded by the words “after my death” to a period after Joshua’s death).