At this, His disciples remembered that it was written: "Zeal for Thy house has consumed Me" (Jn 2:17; cf. Ps 69:9). For by zeal for the house of God the Lord drove those merchants out of the temple.
Brethren, let every Christian be consumed by zeal for the house of God. Who is consumed by zeal for the house of God?
The one who strives to correct whatever perverse thing he sees in it, longs to improve it, and does not remain indifferent. If he cannot improve it, he endures and weeps over it.
Grain is poured out on the threshing floor, and it bears with the chaff so that, when the chaff is separated, it may pass into the granary. If you are grain, remain on the threshing floor before entering the granary.
Otherwise you may be pecked up by the birds before you are gathered in. For the birds of heaven, the powers of the air (cf. Eph 6:12), wait to snatch something from the threshing floor.
They can snatch nothing except what has fallen outside the floor. Therefore let zeal for the house of God consume you.
Let zeal for the house of God consume every Christian, in which house of God he is a part, membrum. Augustine uses membrum, often in the expressions membrum corporis Christi and membrum Ecclesiae, a member of the Body of Christ and a member of the Church.
The sense is that the Christian is not merely an inhabitant of the Lord's house, whose purity he must care for. He is also a part of it, just as he is a member of the Body of Christ, the Church.
Your own house is not more important than the house in which you have salvation forever. You enter your own house for temporal rest. You enter the house of God for eternal rest.
If you are troubled when something disorderly happens in your own house, should you tolerate it, insofar as you are able, when you see something disorderly in the house of God?
There salvation and endless rest have been prepared for you. For example, you see a brother hurrying to the theater. Stop him, warn him, and show sorrow for him, if zeal for the house of God consumes you.
You see others hurrying and wishing to get drunk with wine. They want to do in holy places what ought not be done anywhere at all.
Stop those whom you can. Restrain those whom you can. Frighten those whom you can. Speak gently to those to whom you can, but do not be silent.
If it is a friend, he should be warned meekly. If it is a wife, she should be restrained with particular severity. If it is a maidservant, she must be restrained with blows.
Do what you can according to the role you bear, whether friend, husband, or master. Then you will fulfill the words, "Zeal for Thy house has consumed Me" (Jn 2:17).
But if you are cold and sluggish, thinking only of yourself as though that were enough for salvation, you may say in your heart, "What concern have I with another's sins?"
"It is enough for me to care for my own soul, that I may keep it unharmed for God." Will that servant not come to your mind who hid his talent and did not spend it (cf. Mt 25:25-29)?
He was not accused because he had lost it, but because he had kept it without profit.
Therefore hear, my brethren, that you must not remain without concern. I intend to give you counsel. May He Who dwells within give it, for although He gives it through me, it is still He Who gives it.
You know what should be done. Each of you, in his own house, toward friend, guest, client, elder, or younger, must act as God grants entrance.
As He opens the doors by His word, do not cease to bring profit to Christ. For you too will receive profit from Christ.