'Themselves' in the Bible

Many nations shall join themselves to the Lord in that day and shall be My people. And I will dwell in your midst, and you shall know (recognize, understand fully) that the Lord of hosts has sent Me to you.

The angel answered me, “These are the four spirits of the heavens, which go out after presenting themselves before the Lord of all the earth,

whose buyers slay them and go unpunished, and those who sell them say, ‘Blessed be the Lord, for I have become rich!’ And their own shepherds have no pity on them nor protect them [from the wolves].

And in that day I will make Jerusalem a heavy stone for all the peoples; all who lift it will be severely injured. And all the nations of the earth will come and be gathered against it.

all the families that remain, each by itself, and their wives by themselves [each with an overwhelming individual regret for having blindly rejected their Messiah].

If the family of Egypt does not go up [to Jerusalem] and present themselves, then no rain will fall on them. It will be the plague with which the Lord will strike the nations who do not go up to celebrate the Feast of Booths (Tabernacles).