Charles Ellicott Commentary 1 Chronicles 17:11

"And it shall come to pass, when thy days are fulfilled that thou must go to be with thy fathers, that I will set up thy seed after thee, who shall be of thy sons; and I will establish his kingdom." — 1 Chronicles 17:11 (ASV)

And it shall come to pass. —In accordance with the promise, The Lord will build thee an house (1 Chronicles 17:10). The phrase is missing in Samuel and should probably be supplied from the Septuagint.

Be expired. — Are fulfilled (perfect; Samuel has imperfect tense).

That thou must go to be with thy fathers. —Literally, to go with thy fathers—an unusual expression, for which Samuel has the ordinary, and thou lie down with thy fathers. (Compare to 1 Kings 2:2: Go the way of all the earth.)

Which shall be (shall arise or come, Genesis 17:16) of thy sons. —Samuel has the more original, which shall go forth from thy bowels. The chronicler has paraphrased this to suit the taste of a later age.

His kingdom. —Heb., malkûthô —a later word than the synonym in Samuel (mamlakhtô).