'For Us' in the Bible

And it happened, when Joshua was beside Jericho, he lifted up his eyes and looked. And, behold, there stood a Man in front of him with His sword drawn in His hand. And Joshua went to Him and said to Him, Are You for us, or for our foes?

And the sons of Joseph said, The hill is not enough for us. And all the Canaanites who live in the land of the valley have chariots of iron, those who are of Beth-shean and its towns, and those who are of the valley of Jezreel.

Is the iniquity of Peor too little for us, from which we have not been made clean until today? Yea, a plague came on the congregation of Jehovah!