'Themselves' in the Bible

Because thou hast seen iron mixed with miry clay, they are mixing themselves with the seed of men: and they are not adhering one with another, even as iron is not mixed with clay.

And at the end of years they do join themselves together, and a daughter of the king of the south doth come in unto the king of the north to do upright things; and she doth not retain the power of the arm; and he doth not stand, nor his arm; and she is given up, she, and those bringing her in, and her child, and he who is strengthening her in these times.

and his sons stir themselves up, and have gathered a multitude of great forces, and he hath certainly come in, and overflowed, and passed through, and he turneth back, and they stir themselves up unto his stronghold.

and in those times many do stand up against the king of the south, and sons of the destroyers of thy people do lift themselves up to establish the vision -- and they have stumbled.

And after they join themselves unto him, he worketh deceit, and hath increased, and hath been strong by a few of the nation.

Purify themselves, yea, make themselves white, yea, refined are many: and the wicked have done wickedly, and none of the wicked understand, and those acting wisely do understand;