'Nation' in the Bible

The priests carrying the ark of the Lord’s covenant stood firmly on dry ground in the middle of the Jordan, while all Israel crossed on dry ground until the entire nation had finished crossing the Jordan.

After the entire nation had finished crossing the Jordan, the Lord spoke to Joshua:

The Israelis traveled 40 years in the wilderness until the entire nation that is, the warriors who had departed from Egypt had perished because they hadn't listened to the voice of the LORD. The LORD had promised them that he would not let them see the land that he had sworn to give us, a land that flows with milk and honey.

After the entire nation had been circumcised, they stayed where they were in the camp until they recovered.

And the sun stood stilland the moon stoppeduntil the nation took vengeance on its enemies.Isn’t this written in the Book of Jashar?So the sun stoppedin the middle of the skyand delayed its settingalmost a full day.