Though it may not have been clear to us when He first chose them, we now see Jesus chose the twelve apostles to be teachers. Jesus has appointed men who were everyday people, and He has sent them to teach and preach among the everyday people.
In an earlier episode, the healing of the paralytic, Luke had recorded that, "as [Jesus] was teaching, Pharisees and teachers of the Law were sitting there, who had come from every village of Galilee and Judea and from Jerusalem" (Luke 5:17). In other words, the leading teachers of the people were hearing Him teach, too. Why were they not chosen to go out and teach? Whatever one makes of the backgrounds of the twelve apostles, it is clear not one is a Pharisee, a Scribe, or a Sadducee. There must have been a huge contrast between the persona and teaching of the ruling class and that of the apostles.
2 Corinthians 4:7But we have this treasure in jars of clay, to show that the surpassing power belongs to God and not to us.
The people, also, would have seen the difference, and they, too, are being tested. Will they accept the teaching coming from these humble men? Will they recognize it as Jesus' teaching?
1 Thessalonians 2:13And we also thank God constantly for this, that when you received the word of God, which you heard from us, you accepted it not as the word of men but as what it really is, the word of God, which is at work in you believers.
Note
Scholars have presented together with this reading Matthew 10:1–4, Mark 3:13–19, and Luke 6:12–16. However, since these readings were covered an earlier episode, "The Choosing of the Twelve," they are omitted here.
There is also an appendix that addresses the apostles' names and comments on them individually, "The Twelve Apostles."