Here Ezekiel pursues the same metaphor which he had used with a very slight difference, for there is such an agreement that the connection is apparent between the former and the present sentence. He had said that the false prophets did not go up to the breaches, and did not restore the hedges of the house of Israel: we have explained these words thus — teachers who discharge their duties honestly and sincerely are like builders, who, if they see a breach in a wall, instantly and carefully repair it: they are like gardeners who do not allow either a field or a vineyard to be exposed to wild beasts. As, then, he had formerly said that these false prophets did not go up to the breach through their not being affected by the dispersion of the people, but knowingly and willingly betrayed the people’s safety through open and gross perfidy; so also he now says, that they built a wall indeed, but without mortar. The word תפל, thephel, “untempered,” is variously explained, but I doubt not the Prophet meant sand without lime. Jerome thinks it to be mortar without chaff; but my view is better, namely, that they built only in appearance; and in this the image which the Prophet now uses differs from the preceding one. He had said before, they did not go up to the breach; he now grants them more — that they really built; but it is easy to reconcile the two assertions: since they did not go up to the breach to provide safety for the people; and yet they feigned themselves anxious, and seemed as if they wished to restore the ruins. But while the Prophet merely grants their intention, he adds that they were bad builders, just as if any one should heap together a quantity of sand, and moisten it with water, yet it would profit him nothing; for the sand disperses by itself, and grows solid by lime alone, and thus becomes cement. Therefore the Prophet means that those impostors accomplish nothing seriously; and when they show great anxiety and care, that is in vain, because they only heap up sand and dust when they ought to temper the mortar with sand and lime. We understand then how these two places mutually agree: because, even because they have deceived my people: this is without a figure. Now he adds figuratively, they have built up a wall, but they have daubed it only with untempered mortar, that is, sand.
The kind of fallacies are now mentioned : because they said, Peace, when there was no peace. We yesterday reminded you that impostors have something in common with God’s true servants, just as Satan transforms himself into an angel of light. (2 Corinthians 11:14.) We know that all the prophets were always messengers of peace: now this agrees chiefly with the good news, How beautiful are the feet of those who preach the gospel of peace. (Isaiah 52:7; Romans 10:15.) Whenever God commends his own word, he adds its character of peace. For when he is justly at enmity with us, there is one way of reconciliation and remission of sin. This springs from the preaching of the gospel. The prophets formerly discharged this duty; and when these impostors strove to deceive the people, they stripped off their masks and deceived the simple through the difficulty of discerning between themselves and the true servants of God. And yet, as we said yesterday, no one could be deceived except through their own fault. For God, indeed, offers us peace, and invites us to reconciliation by his own prophets; but on this condition, that we make war with our own lusts. This, then, is one way of being at peace with God by becoming enemies to ourselves, and fighting earnestly against the depraved and vicious desires of the flesh. But how do false prophets preach peace? Why! so that miserable and abandoned men may sleep in the midst of their sins. We must diligently attend, then, to this difference, that we may safely embrace the peace which is offered us by true prophets, and be on our guard against the snares of those who fallaciously flatter us with peace, because under promise of reconciliation they foment hostilities between God and ourselves.