Albert Barnes Commentary 1 Chronicles 29:1

"And David the king said unto all the assembly, Solomon my son, whom alone God hath chosen, is yet young and tender, and the work is great; for the palace is not for man, but for Jehovah God." — 1 Chronicles 29:1 (ASV)

The palace - The original word used here is the Hebrew form of a Persian word, and it generally designates the residence of the Persian monarch (Esther 1:2, 5; 2:3, 8; Nehemiah 1:1; Daniel 8:2). It is only here and in 1 Chronicles 29:19 that it is applied to the temple.