מדרש על מלכים א 8:20

(Devarim 33:4) "Torah was commanded lanu by Moses": This command is only "lanu," only for our sake. Similarly, (I Kings 8:20) "And I have built the house for the name of the L-rd, the G-d of Israel" — What is the purpose of this house? (Ibid. 21) "And I have built there a place for the ark" — This command is only lanu, only for our sake.