In "Captain Alatriste," the men prepare to confront an uncertain situation, arming themselves and stepping outside with a sense of anticipation. Their vigilance is heightened by a cautious awareness of potential threats from those around them. The mention of guarding their backs highlights the tension in their environment and the unpredictability of the circumstances they face.
The quote reflects a deeper commentary on loyalty and trust, particularly in the context of relationships. While Jesus spoke of the bond between brothers, there is an implication that such trust does not extend to cousins or others outside that immediate circle. This insight adds a layer of complexity to the characters' interactions, suggesting that alliances can be fragile and that one must always be wary of potential betrayal.