4205. That I will not pass over this heap to thee, and that thou shalt not pass over this heap to me, and this pillar, for evil. That this signifies the limit defining how much can flow in from good, is evident from the signification here of "passing over," as being to flow in; from the signification of a "heap," as being good (n. 4192); and from the signification of a "pillar," as being truth (concerning which n. 3727, 3728, 4090); and also because both the heap and the pillar were for a sign or for a witness; but here, for a sign of the limit. As conjunction is treated of, the connection involves that in the internal sense the signification is the limit defining how much can flow in from good. It has been stated above that conjunction is effected by good, and that good flows in according to the reception. But the reception of good is not possible in any other way than according to truths, truths being that which good flows into; for good is the agent, and truth is the recipient; and therefore all truths are recipient vessels (n. 4166). As truths are that which good flows into, truths are what limit the inflow of good; and this is what is here meant by the limit that defines how much can flow in from good.
 How the case herein is shall be briefly stated. The truths with man, no matter what they may be, or of whatever nature, enter into his memory by means of affection, that is, by a certain delight which is of love. Without affection (or without the delight which is of love) nothing can enter to man, for in these is his life. The things which have entered are reproduced whenever a similar delight recurs, together with many other things which have associated or conjoined themselves with them; and in the same way when the same truth is reproduced by one's self or by another, the affection or delight of love which there was when it entered, is in like manner excited again; for being conjoined they cohere. From this it is evident how the case is with the affection of truth; for the truth which has entered together with an affection of good, is reproduced when a similar affection recurs; and the affection also is reproduced when a similar truth recurs. It is also manifest from this that no truth can ever be implanted with genuine affection, and become rooted interiorly, unless the man is in good; for the genuine affection of truth is from the good which is of love to the Lord and of charity toward the neighbor. The good flows in from the Lord, but is not fixed except in truths; for in truths good is welcomed, because they are in accord. From all this it is also evident that the reception of good is according to the nature of the truths. The truths that exist with those Gentiles who have lived in mutual charity are of such a nature that the good which inflows from the Lord can also find in them a welcome; but so long as they live in this world, not in the same way as with those Christians who have truths from the Word and live from them in spiritual charity (n. 2589-2604).