'Themselves' in the Bible

when the multitude therefore saw that Jesus was not there, neither his disciples, they themselves got into the boats, and came to Capernaum, seeking Jesus.

The Jews therefore said among themselves, Whither will this man go that we shall not find him? will he go unto the Dispersion among the Greeks, and teach the Greeks?

Now the passover of the Jews was at hand: and many went up to Jerusalem out of the country before the passover, to purify themselves.

The Pharisees therefore said among themselves, Behold how ye prevail nothing: lo, the world is gone after him.

But now I come to thee; and these things I speak in the world, that they may have my joy made full in themselves.

And for their sakes I sanctify myself, that they themselves also may be sanctified in truth.

Now the servants and the officers were standing there , having made a fire of coals; for it was cold; and they were warming themselves: and Peter also was with them, standing and warming himself.

They lead Jesus therefore from Caiaphas into the Praetorium: and it was early; and they themselves entered not into the Praetorium, that they might not be defiled, but might eat the passover.