Peter Chrysologus — on Eccl 4:10 (SERMON 170)

“"And he began to send them forth two by two." He sent them two by two that no one of them, being abandoned and alone, might fall into a denial, like Peter, or flee, like John. Human frailty quickly falls if it proudly relies on itself, despises companions and is unwilling to have a colleague. As Scripture says, "Woe to him that is alone, for when he falls, he has none to lift him up." The same Scripture testifies how much one is strengthened by another's aid, when it states, "A brother that is helped by his brother is like a strong city."”