Augustine of Hippo

They who choose to declare their own honor have refused to dwell in [God's] house; and therefore they do not sing a new song with all the earth. For they do not share it with the whole world; and hence they are not building in the house but have erected a whitened wall. How sternly does God threaten the whitened wall?… What is the whitened wall but hypocrisy, that is, pretense? Outside it is bright; inside it is dirt.

Explanations Of The Psalms 96:3 ↗

Ambrose of Milan

For there is a peace that does not have an offense, and there is one that has it: which is from love, it does not have an offense; which is from deceit, it has. Therefore, the Prophet also says: Peace, peace; but where is peace (Ezekiel 12:10)? Therefore, let us seek the refuge of peace for sinners; for they conspire against the innocent, they gather together to oppress the righteous, to destroy the widow, or to assault her modesty.

Interrogation of Job and David 3.3.6 ↗

Jerome

Because they have deceived my people, saying: peace, and there is no peace. And he was building a wall: but they were plastering it with mud without straw. Say to those who plaster without mortar, that it will fall. For there will be a overflowing rain: and I will give great stones falling from above, and a stormy wind blowing. Indeed, behold, the wall has fallen. Will it not be said to you, where is the whitewash that you plastered? …

Commentary on Ezekiel ↗