'Heads' in the Bible

Say unto the king and to the queen: Humble yourselves, sit down low; for from your heads shall come down the crown of your magnificence.

And their nobles send their little ones for water: they come to the pits, they find no water; they return with their vessels empty; they are ashamed, they are confounded, and have covered their heads.

Because the ground is chapt, for there hath been no rain on the earth, the ploughmen are ashamed, they cover their heads.