Editorial note. This chapter is notable for the hardly surpassable clarity and precisions with which the Saint defines substantial locutions. Some critics, however, have found fault with him for saying that the soul should not fear these locutions, but accept them humbly and passively, since they depend wholly on God. The reply is that, when God favours the soul with these locutions, its own restless effort can only impede His work in it, as has already been said. The soul is truly co-operating with God by preparing itself with resignation and humble affection to receive His favours: it should not, as some critics have asserted, remain completely inactive. As to the fear of being deceived by these locutions, both St. Thomas and all the principal commentators are in conformity with the Saint’s teaching. St. Teresa, too, took the same attitude as St. John of the Cross. Cf. her Life, Chap. xxv, and Interior Castle, VI, iii.

The third kind of interior words, we said, is called substantial. These substantial words, although they are likewise formal, since they are impressed upon the soul in a definitely formal way, differ, nevertheless, in that substantial words produce vivid and substantial effects upon the soul, whereas words which are merely formal do not. So that, although it is true that every substantial word is formal, every formal word is not therefore substantial, but only, as we said above, such a word as impresses substantially on the soul that which it signifies. It is as if Our Lord were to say formally to the soul: Be thou good’; it would then be substantially good. Or as if He were to say to it: Love thou Me’; it would then have and feel within itself the substance of love for God. Or as if it feared greatly and He said to it: Fear thou not’; it would at once feel within itself great fortitude and tranquility. For the saying of God, and His word, as the Wise Man says, is full of power; Ecclesiastes viii, 4. and thus that which He says to the soul He produces substantially within it. For it is this that David meant when he said: See, He will give to His voice a voice of virtue.’ Psalm lxvii, 34 [A.V., lxviii, 33]. And even so with Abraham, when He said to him: Walk in My presence and be perfect’: Genesis xvii, 1. he was then perfect and walked ever in the fear of God. And this is the power of His word in the Gospel, wherewith He healed the sick, raised the dead, etc., by no more than a word. And after this manner He gives certain souls locutions which are substantial; and they are of such moment and price that they are life and virtue and incomparable good to the soul; for one of these words works greater good within the soul than all that the soul itself has done throughout its life.

2. With respect to these words, the soul should do nothing. It should neither desire them nor refrain from desiring them; it should neither reject them nor fear them. It should do nothing in the way of executing what these words express, for these substantial words are never pronounced by God in order that the soul may translate them into action, but that He may so translate them within the soul; herein they differ from formal and successive words. And I say that the soul must neither desire nor refrain from desiring, since its desire is not necessary for God to translate these words into effect, nor is it sufficient for the soul to refrain from desiring in order for the said effect not to be produced. Let the soul rather be resigned and humble with respect to them. It must not reject them, since the effect of these words remains substantially within it and is full of the good which comes from God. As the soul receives this good passively, its action is at no time of any importance. Nor should it fear any deception; for neither the understanding nor the devil can intervene herein, nor can they succeed in passively producing this substantial effect in the soul, in such a way that the effect and habit of the locution may be impressed upon it, unless the soul should have given itself to the devil by a voluntary compact, and he should have dwelt in it as its master, and impressed upon it these effects, not of good, but of evil. Inasmuch as that soul would be already voluntarily united to him in perversity, the devil might easily impress upon it the effects of his sayings and words with evil intent. For we see by experience that in many things and even upon good souls he works great violence, by means of suggestion, making his suggestions very efficacious; and if they were evil he might work in them the consummation of these suggestions. But he cannot leave upon a soul effects similar to those of locutions which are good; for there is no comparison between the locutions of the devil and those of God. The former are all as though they were not, in comparison with the latter, neither do they produce any effect at all compared with the effect of these. For this cause God says through Jeremias: What has the chaff to do with the wheat? Are not My words perchance as fire, and as a hammer that breaketh the rock in pieces?’ Jeremias xxiii, 28-9. And thus these substantial words are greatly conducive to the union of the soul with God; and the more interior they are, the more substantial are they, and the greater is the profit that they bring. Happy is the soul to whom God addresses these words. Speak, Lord, for Thy servant heareth. 1 Kings [A.V., 1 Samuel] iii, 10.