Charles Ellicott Commentary 1 Chronicles 22:6

"Then he called for Solomon his son, and charged him to build a house for Jehovah, the God of Israel." — 1 Chronicles 22:6 (ASV)

Then he called. — And he called Solomon. When? After completing his preparations, and shortly before his death (1 Chronicles 22:5). (Compare to 1 Kings 2:1–9, especially 1 Chronicles 22:3–4, of which we seem to hear echoes in the present speech.)

Upon grounds of internal evidence, we may pronounce this dying address of David to be an ideal composition, put into the king’s mouth by the unknown author whose work the chronicler follows: or rather, perhaps, by the chronicler himself, whose style is evident throughout. (Compare to the addresses attributed to David in 1 Chronicles 28.)

For the Lord God of Israel. —There ought to be a comma after “Lord.” Literally the phrase would run, For Jehovah, the God of Israel. Thus the stress lies on the national aspect of the Deity, for whom Solomon was to undertake this national work.