'Tender' in the Bible

For David said, Solomon my son is young and tender, and the house that is to be built for Jehovah must be exceeding great in fame and in beauty in all lands: I will therefore make preparation for it. And David prepared abundantly before his death.

And king David said to all the congregation, Solomon my son, the one whom God has chosen, is young and tender, and the work is great; for this palace is not to be for man, but for Jehovah Elohim.