Augustine of Hippo

"Nicodemus," however, "one of the Pharisees, who had come to the Lord by night,"-not indeed as being himself unbelieving, but timid; for therefore he came by night to the light, because he wished to be enlightened and feared to be known;-Nicodemus, I say, answered the Jews, "Doth our law judge a man before it hear him, and know what he doeth?" For they perversely wished to condemn before they examined. …

Tractates on John 33 ↗

Thomas Aquinas

The outcome of this dissension is seen to be useless. So he says: Then every man returned, leaving the matter unfinished, to his own house, i.e., to what belonged to him, empty of faith and frustrated in his evil desires. "He frustrates the plans of the wicked" (Jb 5:13); "God destroys the plans of rulers, and frustrates the schemes of the people" (Ps 32:10). Or, each returned to his own house, i.e., to the evil of his unbelief and irreverence. "I know where you live: where the throne of Satan is. …

Commentary on John ↗

Bonaventure

"And they returned," because they could not avoid reproof and also could not carry out their evil design. Therefore he says: "And they returned, each one to his own house," so that not one remained with another; whence Sirach 21: "The congregation of sinners is like gathered tow, and their end is a flame of fire"; Psalm: "Scatter the nations that desire wars."

Commentary on John, Chapter 7 ↗