'Inexperienced' in the Bible

David said, “Solomon my son is young and inexperienced, and the house that is to be built for the Lord shall be exceedingly magnificent, famous, and an object of glory and splendor throughout all lands [of the earth]. So now I will make preparations for it.” Therefore, David made ample preparations before his death.

And King David said to all the assembly, “My son Solomon, whom alone God has chosen, is still young and inexperienced and the work is great; for the temple is not for man but for the Lord God.