3413. And filled them with dust. That this signifies by means of earthly things, that is, by the loves of self and of gain, is evident from the signification of “dust,” as being that which is of this nature (n. 249). The meaning is that those called “Philistines” (that is, those who are not in life but in doctrine) obliterate interior truths by earthly loves, which are the love of self and of gain; from these loves they were called the “uncircumcised” (n. 2039, 2044, 2056, 2632). For they who are in these loves cannot but fill the wells of Abraham with dust (that is, obliterate the interior truths of the Word by earthly things), because from these loves they cannot possibly see spiritual things (that is, the things which are of the light of truth from the Lord); for these loves induce darkness, and darkness extinguishes this light. For as before said (n. 3412), on the approach of the light of truth from the Lord, they who are in doctrine only, and not in life, are in total darkness and stupor, and even become angry, and in every way busy themselves to dissipate truths; for the love of self and of gain is of such a nature that it cannot endure the near approach of anything of truth from the Divine. Nevertheless such persons can glory and take pride in the fact that they know truths, nay, they preach them from a kind of zeal; but it is the fires of those loves that kindle and arouse them, and their zeal is merely a fervor thence derived, as is sufficiently evident from the fact that they can preach against their own veriest life with a like zeal or fervor. These are the earthly things by which the Word itself, which is the fountain of all truth, is blocked up.

249. That to “eat dust all the days of its life” signifies that their sensuous part became such that it could not live from anything except that which is of the body and the earth, that is to say, that it became infernal, is evident also from the signification of “dust” in the Word; as in Micah:

Feed thy people as in the days of eternity. The nations shall see and shall blush at all their might; they shall lick the dust like a serpent, they shall be shaken out of their holds like creeping things [serpentes] of the earth (Micah 7:14, 16-17).

“The “days of eternity” mean the Most Ancient Church; the “nations” those who trust in their Own, of whom it is predicated that “they shall lick the dust like a serpent.”

In David:

Barbarians shall bow themselves before God, and His enemies shall lick the dust (Psalms 72:9).

“Barbarians” and “enemies” are those who regard only earthly and worldly things.

In Isaiah:

Dust shall be the serpent’s bread (Isaiah 65:25).

As “dust” signifies those who do not regard spiritual and celestial things, but only what is corporeal and earthly, therefore the Lord enjoined His disciples that if the city or house into which they entered was not worthy, they should “shake off the dust of their feet” (Matthew 10:14). (That “dust” signifies what is condemned and infernal, will be further shown at verse 19)