'Two' in the Bible

Better is one handful with some rest than two hands full of toil and chasing the wind.

Two people are better than one, because they can reap more benefit from their labor.

Furthermore, if two lie down together, they can keep each other warm, but how can one person keep warm by himself?

Although an assailant may overpower one person, two can withstand him. Moreover, a three-stranded cord is not quickly broken.