Albert Barnes Commentary 1 Chronicles 28:6

"And he said unto me, Solomon thy son, he shall build my house and my courts; for I have chosen him to be my son, and I will be his father." — 1 Chronicles 28:6 (ASV)

Besides the message sent to David through Nathan, he had a revelation, of which we have only the indirect account given here and in 1 Chronicles 22:8–10 (see the note). He was told that one of his sons would be raised up to fill his throne after him and would build the temple. In the second revelation, it was distinctly declared to him that the son intended was Solomon.

My house and my courts—that is, the temple and the courts of the temple (see 2 Chronicles 4:9).