'One' in the Bible

And the children of Judah and the children of Israel shall be gathered together, and they shall appoint themselves one head, and shall go up out of the land: for great is the day of Jizreel.

For this shall the land mourn, and every one that dwelleth therein shall languish, with the beasts of the field, and with the fowl of the heavens, yea, the fishes of the sea also shall be taken away.

I will not execute the fierceness of mine anger, I will not again destroy Ephraim; for I am God, and not man, the Holy One in the midst of thee: and I will not come in anger.