“The normative theologians are the authors of Scripture."--Joseph Cardinal Ratzinger, Principles of Catholic Theology: Building Stones for a Fundamental Theology (trans., M. F. McCarthy; San Francisco: Ignatius, 1987), 321.
The literary structure of Matthew 9:35-10:8 seems to highlight Jesus' act of giving his authority to the twelve:
On November 11th, John Paul the Great Catholic University will hold its 2nd Annual Celebration Gala. Internationally known Catholic actor Eduardo Verastegui will be speaking. Eduardo is currently making waves in America with his new film, Bella, which was the winner of the prestigious Toronto Film Festival People's Choice Award.
“…when they again assemble in one place and, after girding their loins with linen clothes, bathe their bodies in cold water. After this purification, they assemble in a private apartment which none of the uninitiated is permitted to enter; pure now themselves, they repair to the refectory, as to some sacred shrine. When they have taken their seats in silence, the baker serves out the loaves to them in order, and the cook sets before each one plate with a single course. Before meat the priest says a grace, and none partake until after the prayer.” [Jewish Wars 2:129-31]

Be sure to read Parts 1 & 2...Thus the distinctly Deuteronomic practice of making annual pilgrimage to the central sanctuary represented a defiling concession (i.e., a cultic sin of omission): the sacrifice of (only) the firstlings--with its corrollary, the profane slaughter of all non-firstlings--was completely deficient by stricter Priestly standards, especially concerning the handling of blood. Furthermore, the consecration of firstlings that was commanded by the Deuteronomic code and the substitution that was allowed were totally inadequate from the Priestly perspective. [Scott Hahn and John Bergsma, "What laws were 'not good'?", 217.]Why does Dueteronomy make such concessions. I think one reason is the fact that Deuteronomy is given to Israel prior to entering the promised land. In the wilderness it was much easier for the Israelites to bring their sacrifices to the Tent at the center of the camp. In the promised land, however, they would spread out across a much greater area. The tribal territories encompassed a much larger geographical area than the "camp" of Israel in the desert. Bringing sacrifices to the central sanctuary (cf. Deut 12:10-13) entailed a much greater hardship. In this God accommodated himself to the Israelites. So much more could be said here about all of this, but due to the limited scope of this essay, that will have to suffice for now.
"The divine plan of Revelation is realized simultaneously "by deeds and words which are intrinsically bound up with each other"[DV 2] and shed light on each another. It involves a specific divine pedagogy: God communicates himself to man gradually. He prepares him to welcome by stages the supernatural Revelation that is to culminate in the person and mission of the incarnate Word, Jesus Christ."To prepare humanity for what He would ultimately do in Christ, God in the Old Testament therefore had to make certain allowances. Again, we can cite Dei Verbum 15, which explains that the Old Testament contains some things "which are incomplete and temporary" that "nevertheless show us true divine pedagogy."
Whoever denies that both Testaments come from the same God for the reason that our people are not bound by the same sacraments as those by which the Jews were bond and still are bound, cannot deny that it would be perfectly just and possible for one father of a family to lay one set of commands upon those for whom he judged a harsher servitude to be useful, and a different set on those whom he deigned to adopt into the position of sons. If the trouble is that the moral precepts of the old law are lower and in the Gospel higher, and that therefore both cannot come from the same God, whoever thinks in this way may find difficulty in explaining how a single physician prescribes one medicine to weaker patients through his assistants, and another by himself to stronger patience, all to restore health [De Vera Religione, XVII, 34].Relating the use of medicine to the divine economy, Augustine writes,
The art of medicine remains the same and quite unchanged, but it changes its prescriptions for the sick, since the state of their health changes. So the divine providence remains entirely without chang, but comes to the aid of mutable creatures in various ways, and commands or forbids different things at different times according to the different stages of their disease...In keeping with this imagery the fathers saw God's concessions in the Old Testament as necessary for the "curing" of Israel.
"Do you see that he did many things so as to give an example? A teacher who is full of wisdom stammers along with his stammering young students. But the teacher's stammering does not come from a lack of learning; it is a sign of the concern he feels toward the children. In the same way, Christ did not do these things because of the lowliness of his essence, he did them as a condescension" [On the incompreh., X, 2, 786. Cited in Benin, 70].Athanasius thus writes, "In like manner then, if the blessed Peter speak of the Divine Word also, as sent to the children of Israel by Jesus Christ, it is not necessary to understand that the Word is one and Christ another, but that they were one and the same by reason of the uniting which took place in His divine and loving condescension and becoming man. [Discourse IV Against the Arians, 31]."

Like Joshua, Samuel is also presented as a new Moses. Like Moses, Samuel
Dei Verbum 15 affirms that the Old Testament, though inspired Scripture, contains "some things which are incomplete and temporary." As we saw from Paul's explanation in Galatians, this view is consistent with the New Testament. In fact, Jesus also makes this point.
Dei Verbum 13 reads as follows: "In Sacred Scripture, therefore, while the truth and holiness of God always remains intact, the marvelous "condescension" of eternal wisdom is clearly shown, "that we may learn the gentle kindness of God, which words cannot express, and how far He has gone in adapting His language with thoughtful concern for our weak human nature." (11) For the words of God, expressed in human language, have been made like human discourse, just as the word of the eternal Father, when He took to Himself the flesh of human weakness, was in every way made like men.""Now before faith came, we were confined under the law, kept under restraint until faith should be revealed. So that the law was our custodian [paidagogos] until Christ came, that we might be justified by faith. But now that faith has come, we are no longer under a paidagogos [custodian]; for in Christ Jesus you are all sons of God, through faith."Paul's words in fact represent the custom at the time in the Greco-Roman world. Children were "led" by a pedagogue until maturity. Until that time they were treated as the slaves of the hosuehold. However, once they came of age they no longer were led by the tutor and were considered full-blown "sons".
“The education of the human race, represented by the people of God, has advanced, like that of an individual, through certain epochs, or, as it were, ages, so that it might gradually rise from earthly to heavenly things, and from the visible to the invisible. This object was kept so clearly in view, that, even in the period when temporal rewards were promised, the one God was presented as the object of worship, that men might not acknowledge any other than the true Creator and Lord of the spirit, even in connection with the earthly blessings of this transitory life… It was best, therefore, that the soul of man, which was still weakly desiring earthly things, should be accustomed to seek from God alone even these petty temporal boons, and the earthly necessities of this transitory life, which are contemptible in comparison with eternal blessings, in order that the desire even of these things might not draw it aside from the worship of Him, to whom we come by despising and forsaking such things” (City of God, Book X, 14)
To be continued...