Ecclesiastes 4

9 Two are better than one because they have a better reward for their labour.

10 For if they fall, the one will lift up his fellow; but woe to him that is alone when he falls, for he has not another to help him up.

11 Again, if two sleep together, then they have heat, but how can one be warm alone?

12 And if one prevails against him, two shall withstand him; and a threefold cord is not quickly broken.