'Flesh and Blood' in the Bible

All the tribes of Israel came to David at Hebron saying, "Look, we are your very flesh and blood!

Then David said to Abishai and to all his servants, "My own son, my very own flesh and blood, is trying to take my life. So also now this Benjaminite! Leave him alone so that he can curse, for the Lord has spoken to him.

You are my brothers -- my very own flesh and blood! Why should you delay any further in bringing the king back?'

Say to Amasa, 'Are you not my flesh and blood? God will punish me severely, if from this time on you are not the commander of my army in place of Joab!'"