In a casual reading, the story at the beginning of Luke chapter 9 doesn't seem to have much relation to the events of the previous chapter. But, looking deeper, it does.

At the end of Luke chapter 8, when the little girl who seemed to be dead was brought back to life, Jesus commanded that her parents give her something to eat. In sacred scripture, giving someone “something to eat” is about spiritual nourishment. It refers not only to teaching, but also spiritually nourishing one another with words of encouragement that align with spiritual truth. To the extent that we do this for one another, we become God’s disciples and apostles, cooperating with Him in the work of salvation. We are “disciples” while in His presence, learning from His Word. And we are His “apostles” when we are being sent out to minister to others, through our words and actions.

It's appropriate, then, that chapter 9 begins with Jesus calling together His twelve disciples, and then sending them out to minister to others:

“Having called together His twelve disciples, He gave them power and authority over all demons, and to cure diseases. And He sent them out to preach the kingdom of God, and to heal the sick” (Luke 9:1-2).

In a deep sense, the gathering together of the twelve disciples, before sending them out as apostles, represents an important step in our spiritual development. This begins when Jesus “calls His twelve disciples together” in us, which represents that time in our lives when we begin to understand matters of the spirit more deeply. Every “disciple” represents an essential spiritual principle. As we “gather” these principles together in our minds, striving to see how they cohere and relate to the larger whole, we begin to see the connections between ideas, and we develop a keener discernment between what is primary and what is secondary. As a result, we can apply the truth we have been learning more usefully in our lives. ¹

After gathering the disciples together, Jesus sends them forth as His apostles, giving them specific instructions for the journey. “Take nothing for your journey,” He says to them. They are not to take a staff, or a backpack, or bread, or silver, or even an extra change of clothes. Every word has spiritual significance. They will not be needing a “staff,” because they will be relying on the Lord alone. They will not need a “pack” to store up what they have learned, because the Lord will give them what to say. They will not need “bread” or “silver,” because the Lord will provide all the goodness (“bread”) and all the truth (“silver”) they need. And they will not need an extra tunic because they will be clothed in truth from the Lord, and will not need anything additional from themselves.

In this case, less is more. When there is less of self, there is more of God. ²

Shaking off the dust:

Jesus then says to them, “And into whatever house you enter, there remain, and thence go out. And as many as shall not accept you, when you come out of that city, shake off even the dust from your feet for a testimony against them” (Luke 9:4-5). A “house,” as we have mentioned before, represents the human mind. It is the place where we think things over, consider our options, and dwell on those matters that are significant to us. Our “house,” then, is our spiritual residence, our “dwelling-place.”

Spiritually speaking, everyone has a dwelling-place — a set of beliefs about themselves, about others, and about God. Because of this, some people will accept the teachings of the apostles gladly, while others will reject them. Knowing this in advance, Jesus tells them that if their teachings are rejected, the apostles should leave the house, come out of the city, and “shake the dust from off their feet.”

In sacred scripture, the term “dust” refers to things that are low and relate to the world of the external senses. Just as dust settles to the earth, there is a tendency to remain focused on things that gratify our worldly senses without lifting our minds to higher things. In the Hebrew Scriptures, this is represented by the lowly serpent who deceived Eve. As it is written, “So the Lord God said to the serpent, “Because you have done this … you shall eat dust all the days of your life” (Genesis 3:14). ³

Jesus’ instruction to “shake off the dust” is sound advice, not only for the apostles, but for each of us. Along the spiritual journey, as we are learning truth and putting it into our lives, we may, at times, find ourselves being dragged down to lower things — those things that are merely worldly and temporal. This is, spiritually, “the dust on our feet.” Whether the dust comes through the negative influence of others or the self-serving thoughts we entertain, Jesus tells us to “shake the dust from off our feet,” and continue our journey. ⁴

This is precisely what the apostles do. As it is written in the next verse, “And going out, they passed into the villages, announcing the gospel and curing everywhere” (Luke 9:6).

V:

4966. 'The chief of the attendants' means which facts come first and foremost in explanations. This is clear from the meaning of 'the chief of the attendants' as the facts which come first and foremost in explanations, dealt with in 4790. Ones which come first and foremost in explanations are those which are pre-eminently suitable for explaining the Word, and so for coming to understand teachings drawn from the Word about love to God and charity towards the neighbour. It should be recognized that the factual knowledge of the people of old was entirely different from that existing at the present day. As stated above, the factual knowledge of the people of old had to do with the correspondences of things in the natural world with realities in the spiritual world. Knowledge which at the present day is called philosophical knowledge, such as Aristotelian systems and their like, did not exist among them. This is also evident from the books written by ancient authors, most of which consisted of descriptions of such things as were signs of, represented, and corresponded to more internal realities, as may be seen from the following evidence, and ignoring all else.

[2] They envisaged Helicon on a mountain and took it to mean heaven, and Parnassus on a hill below that, and took it to mean factual knowledge. They spoke of a flying horse, called Pegasus by them, which broke open a fountain there with its hoof; they called branches of knowledge virgins; and so on. For with the help of correspondences and representatives they knew that 'a mountain' meant heaven, 'a hill' the heaven beneath this, which is heaven as it exists among men, a horse' the power of understanding, 'its wings with which it flew' spiritual things, 'its hoof' that which was natural, 'a fountain' intelligence, while three virgins called 'the Graces' meant affections for good, and virgins who were named 'the Heliconians and 'the Parnassians' meant affections for truth. To the sun they likewise allotted horses, whose food they called ambrosia and whose drink they called nectar; for they knew that 'the sun' meant heavenly love, 'horses' powers of the understanding which sprang from that love, while 'food' meant celestial things and 'drink' spiritual ones.

[3] The Ancients are also the originators of customs that are still followed when kings are crowned. The king has to sit on a silver throne, wear a purple robe, and be anointed with oil. He has to wear a crown on his head, while holding in his hands a sceptre, a sword, and keys. He has to ride in regal splendour on a white horse shed with horseshoes made of silver; and he has to be waited on at table by the chief nobles of the kingdom. And many other customs are followed besides these. The Ancients knew that 'a king' represented Divine Truth that is rooted in Divine Good, and from this they knew what was meant by a silver throne, a purple robe, anointing oil, crown, sceptre, sword, keys, white horse, horseshoes made of silver, and what was meant by being waited on at table by the chief nobles. Who at the present day knows the meaning of any of these customs, or where the information exists to show him their meaning? People refer to them as symbols, but they know nothing at all about correspondence or representation. All this evidence shows what the factual knowledge possessed by the Ancients was like, and that this knowledge gave them a discernment of spiritual and heavenly realities, which at the present day are scarcely known to exist.

[4] The factual knowledge that has replaced that of the Ancients, and which strictly speaking is called philosophical knowledge, tends to draw the mind away from knowing such things because such knowledge can also be employed to substantiate false ideas. Furthermore, even when used to substantiate true ones it introduces darkness into the mind, because for the most part mere terms are used to substantiate them, which few people can understand and which the few who do understand them argue about. From this it may be seen how far the human race has departed from the learning of the Ancients, which led to wisdom. Gentiles received their factual knowledge from the Ancient Church, whose external worship consisted in representatives and meaningful signs and whose internal worship consisted in the realities represented and meant by these. This was the kind of factual knowledge that is meant in the genuine sense by 'Egypt'.