'Two' in the Bible

The words of Amos, who was among the herdsmen of Tekoa, which he saw concerning Israel in the days of Uzziah king of Judah, and in the days of Jeroboam the son of Joash king of Israel, two years before the earthquake.

Shall two walk together, except they have agreed?

Thus saith Jehovah: As the shepherd rescueth out of the mouth of the lion two legs, or a piece of an ear, so shall the children of Israel be rescued that sit in Samaria in the corner of a couch, and on the silken cushions of a bed.

So two or three cities wandered unto one city to drink water, and were not satisfied: yet have ye not returned unto me, saith Jehovah.