Ecclesiastes 4:9

7Then I returned and saw vanity under the sun.

8There is one who is alone, and he has neither son nor brother. There is no end to all of his labor, neither are his eyes satisfied with wealth. “For whom then do I labor and deprive my soul of enjoyment?” This also is vanity. Yes, it is a miserable business.

9Two are better than one, because they have a good reward for their labor.

10For if they fall, the one will lift up his fellow; but woe to him who is alone when he falls, and doesn’t have another to lift him up.

11Again, if two lie together, then they have warmth; but how can one keep warm alone?