The use of a weapon in self-defense does not require a "warrior."  And even a priest is allowed to use force to defend himself.  Thus, the fact that Jesus was neither a warrior nor a priest is no bar whatsoever to the legitimate use of force in self-defense.  In fact, the Catechism states:  "Legitimate defense can be not only a right but a GRAVE DUTY for one who is responsible for the lives of others. The defense of the common good requires that an unjust aggressor be rendered unable to cause harm. For this reason, those who legitimately hold authority also have the right to use arms to repel aggressors against the civil community entrusted to their responsibility."  CCC 2265.