'Themselves' in the Bible

So they took what Moses had commanded to [the] {front of} [the] tent of assembly, and the whole community presented [themselves], and they stood {before} Yahweh.

If [there is] a woman with whom a man lies down [and there is] an emission of semen, then they shall wash [themselves] with water, and they shall be unclean until the evening.

But a priest, if [with] his money he buys a person [as] {his possession}, that one may eat it, and the descendants of his house themselves may eat his food.

And the land shall be deserted by them, and it shall enjoy its Sabbaths in its being desolate from them, and they themselves must pay for their guilt, {simply because} they rejected my regulations, and their inner self abhorred my statutes.