Ecclesiastes 4:9-12

Two are better than one, because they have a good return for their toil.  For if they fall,
one will lift up his fellow;  but woe to him who is alone when he falls and has not
another to lift him up. Again, if two lie together, they are warm; but how can one be
warm alone?   And though a man might prevail against one who is alone, two will
withstand him.