Albert Barnes Commentary 1 Chronicles 22:8

"But the word of Jehovah came to me, saying, Thou hast shed blood abundantly, and hast made great wars: thou shalt not build a house unto my name, because thou hast shed much blood upon the earth in my sight." — 1 Chronicles 22:8 (ASV)

The word of the Lord came to me ... - Not by Nathan (1 Chronicles 17:4–15), but on some other occasion (1 Chronicles 28:3). On the bloody character of David’s wars, see 2 Samuel 8:2, 2 Samuel 8:5; 2 Samuel 10:18; 2 Samuel 12:31; and 1 Kings 11:16.