It is very significant that Jesus wants to involve the Twelve in his action from the outset: it is a sort of “apprenticeship” with a view to the great responsibility that awaited them. The fact that Jesus calls certain disciples to collaborate directly in his mission demonstrates one aspect of his love, namely, he does not spurn the help that other people can contribute to his work; he knows their limitations, their weaknesses, but bears no contempt for them. On the contrary Jesus confers on them the dignity of being his envoys. He sends them out two by two and gives them instructions which the Evangelist sums up in a few sentences. The first concerns the spirit of detachment: the Apostles must not be attached to money or to other comforts. Then Jesus warns the disciples that they will not always receive a favourable welcome. Sometimes they will be rejected; they might even be persecuted. However this must not frighten them: they must speak in Jesus’ name and preach the Kingdom of God without being worried about whether or not they will succeed. Succeed — its success must be left to God. (Pope Benedict XVI, Homily, Pastoral visit to Frascati, Italy, 15 July 2012)