After depicting the lonely man, the author of Ecclesiastes illustrated the advantages of fellowship and partnership (vv.9-12). He did so by referring to the value and productivity of two laboring together (v.9), of one helping the other when one falls (v.10), of two keeping each other warm on cold nights (v.11), and of two protecting each other when attacked (v.12). The closing example, “A threefold cord is not quickly broken,” was a proverbial way of saying “there is strength in numbers.”
God has designed us with a need for one another. So be sure to have friends, and be a friend. That’s the only way to fulfill God’s design for companionship.