Luke's brief exchange about swords has generated sharply different interpretations. Jesus tells the disciples that changed circumstances are coming, they produce two swords, and he answers, 'It is enough.'
The narrative itself soon provides an important control on how the exchange is understood.
The Greek machaira can refer to a sword or large knife. Such weapons could be carried for protection or used violently. Two among the group would plainly be inadequate for military resistance to an arresting force, making it unlikely that Jesus is organizing an armed defense.
When a disciple actually strikes the high priest's servant, Jesus stops the violence and heals the wounded man in Luke's account. 'It is enough' may therefore close a misunderstanding rather than endorse a sufficient arsenal.
The historical reality of weapons should not be spiritualized away, but neither should the two swords be turned into a program for violent resistance. Luke deliberately places the saying beside Jesus' refusal to defend his mission by force.
The episode portrays disciples entering a more dangerous world while still misunderstanding the manner in which Jesus will face opposition.