1 Chronicles 17:11
And it shall come to pass, when thy days be expired that thou must go to be with thy fathers, that I will raise up thy seed after thee, which shall be of thy sons; and I will establish his kingdom. And it shall come to pass, when thy days be expired that thou must go to be with thy fathers, that I will raise up thy seed after thee, which shall be of thy sons; and I will establish his kingdom.
After David's days were expired for him to go to be with his fathers, God would raise up his seed after him from among his sons and establish his kingdom. That promised son was Solomon. God had chosen Solomon to build the temple that David himself had hoped to build.