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).

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2130. As regards the second representation, that is to say, the idea of a Last Judgement which takes place before the eyes of the good when they are being admitted into heaven, let that too be described. In the Word it is said that the door was shut, so that they could no longer be admitted; and that they had no oil, arrived too late, and therefore were not admitted, statements which also mean a Last-Judgement state. The situation with these matters and how they are to be understood has been shown to me.

[2] I heard communities of spirits declaring in a clear voice, one community after another, that a wolf had wished to carry them off but that the Lord rescued them, and so they were restored to Him, and on that account rejoiced from the depths of their heart. Indeed they had been without hope, and so were afraid that the door had been shut, and that they had arrived too late to be admitted. Such thought had been instilled into them by those called wolves, but it vanished on their being admitted, that is, being received, by angelic communities. Being admitted into heaven is nothing else. The admission which I witnessed seemed to proceed continuously community by community, up to twelve of them, the admission, that is, the reception, of the twelfth being more difficult than that of the previous eleven. After that about eight more communities were also admitted, which, it was pointed out to me, were composed of females. Having witnessed all this I was told that this is how the process of admission, that is, of being received into heavenly communities is seen. They proceed in an orderly continuation from one place to another. I was also told that heaven can never be filled up, still less the door be shut, but that the more who enter, the more blessing and happiness there is for those in heaven, because their unanimity is made that much stronger.

[3] After these had been admitted it did at that point seem as though heaven was shut; for there were still more who wished after that to be admitted, that is, to be received. But they were told in reply that they could not yet be let in. This is meant by those arriving too late, by the door being shut, by their knocking, and by the statement about their having no oil in their lamps. The reason they were not admitted was that they were not yet ready to move among angelic communities where mutual love exists, for, as stated above towards the end of 2119, people who in the world have lived charitably disposed towards the neighbour are raised up by the Lord into heaven gradually.

[4] There were also other spirits who did not know what heaven is, namely mutual love, and who also at that time wished to be admitted. They imagined it was just a matter of being admitted. They received the reply however that it was not yet time for them, but that they would be admitted at another time when they were ready for it. The reason why twelve communities were seen was that 'twelve' means everything comprising faith, as stated above towards the end of 2129.