Jesus sends 70 disciples out into the great harvest, which is the world, inviting them to pray the Lord of the harvest that there may be no lack of labourers in his harvest (cf. Lk 10:1-3); but he does not send them with powerful means, but “as lambs in the midst of wolves” (v. 3), without purse, bag, or sandals (cf. v. 4). St John Chrysostom, in one of his homilies, comments: “For so long as we are sheep, we conquer: though ten thousand wolves prowl around, we overcome and prevail. But if we become wolves, we are worsted, for the help of our Shepherd departs from us” (Homily 33, 1: PG 57, 389). Christians must never yield to the temptation to become wolves among wolves; it is not with might, with force, with violence that Christ’s kingdom of peace grows, but with the gift of self, with love carried to the extreme, even towards enemies. Jesus does not conquer the world with the force of arms, but with the force of the Cross, which is the true guarantee of victory. The consequence of this for those who want to be disciples of the Lord, his envoys, is to be prepared for the passion and martyrdom, to lose their own life for him, so that in the world goodness, love and peace may triumph. This is the prerequisite needed to say, upon entering into every situation: “Peace be to this house” (Lk 10:5).
[Pope Benedict, Prayer in preparation for the Assisi Meeting, 26 October 2011]