Ecclesiastes 4:11

⁹ Two are better than one; because they have a good 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 falleth; for he hath not another to help him up.

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

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

¹³ Better is a poor and a wise child than an old and foolish king, who will no more be admonished.

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB: Again, if two lie down together, they will keep warm; but how can one keep warm alone?
KJV: Again, if two lie together, then they have heat: but how can one be warm alone?
WEB: Again, if two lie together, then they have warmth; but how can one keep warm alone?
ASV: Again, if two lie together, then they have warmth; but how can one be warm [alone]?
DARBY: Again, if two lie together, then they have warmth; but how can one alone be warm?
BLB: Also, if two lie down, then there is warmth for them; but for one, how can he keep warm?

ÅB: Likeledes når to ligger sammen, så blir de varme; men hvordan kan den som ligger alene, bli varm?
OTB: Dessuten, hvis to ligger sammen, vil de holde seg varme. Men hvordan kan én holde seg varm alene?
B1930: Likeledes når to ligger sammen, så blir de varme; men hvorledes kan den som ligger alene, bli varm?

1 Kings 1:1–4
Now king David was old and stricken in years; and they covered him with clothes, but he gat no heat.
Read in context