(Verse 14 and following) And the angel who spoke in me said to me: Cry out, saying: Thus says the Lord of hosts: I am jealous for Jerusalem and Zion with great jealousy, and with great anger I am angry (alternate: I will be angry) with the prosperous nations, for I was angry only a little, but they (alternate: they themselves) assisted in bringing about evil. Therefore, thus says the Lord: I will return to Jerusalem with mercy, and my house will be built in it, says the Lord of hosts, and the plumb line will be stretched out over Jerusalem. LXX: And the angel who was speaking with me said, 'Cry out, saying: Thus says the Lord Almighty: I am zealous for Jerusalem and for Zion with a great zeal, and with great wrath I am angry with the nations that are above them, for I was indeed angry for a little while, but they themselves are subjected to evil. Therefore, thus says the Lord: I will return to Jerusalem with mercy, and my house will be rebuilt in it,' says the Lord Almighty, 'and the measuring line will be stretched out over Jerusalem.' Still good words, and consoling words these are, which now the prophet is commanded to cry aloud: that the Lord is zealous for Jerusalem and Zion with a great zeal. But he who is zealous, shows by loving the thing that he is zealous for, not saying, as Isaiah says, 'As a wife despises her husband, so has the house of Israel despised me' (Jeremiah 3:20). To whom the Lord spoke through Ezekiel: 'I will no longer be angry with you, and my zeal has turned away from you' (Ezekiel 16:42). Therefore, he who is jealous for Jerusalem and Zion (which are one and the same city) now becomes angry with the rich nations, whom he called upon above red, white, and various colored horses, because he himself delivered them for punishment. However, they raged against those who were delivered; here, as if wanting his son to be corrected by a tutor; there, as if wanting to kill an enemy and punish him. Similar to this is what is written in Isaiah: 'I gave them into your hands, but you showed them no mercy.' You have laid a heavy yoke on the aged and said, 'I will be mistress forever' (Isaiah 47:6). But zeal is understood in a human way, like anger. From this passage heretics are refuted, who detract from the Old Testament, claiming that God, when angry, does not want to destroy those towards whom He is angry, but to correct them. Therefore, he says, I have been zealous for Jerusalem, and with great zeal I have consumed those who opposed her: therefore, thus says the Lord: I will return not in one mercy, but in many mercies to Jerusalem, and my house, that is, the temple, will be rebuilt in it under Zerubbabel and Joshua son of Jehozadak; and the measuring line of the builders will be stretched out over Jerusalem. Jerusalem and Zion can be understood as the vision of peace and the watchtowers, which do not belong to the wars of this age, nor to the lowly and earthly, but to peace and harmony, and to the lofty heights of the heavens, the Church. Because of its vices and sins, and because of its daily cooling love, the Lord becomes angry and delivers it to persecutions, so that it may appear as gold and silver in a furnace. However, its adversaries, to whom it has been entrusted, seek to destroy it. Jerusalem will be built again with the blood of Caesar, from one gate to another. Where the Lord promising peace and mercy, says that it will be built again. And a plumb line or a cord should be stretched in it according to the measurements and orders of each. However, what a cord is, is demonstrated in the following chapter, where the prophet says: I lifted up my eyes and saw: and behold a man, and in his hand a measuring cord. But the temple of God that the adversaries destroyed can also be understood as the venerable body of the Lord, of which he himself said: Destroy this temple and in three days I will raise it up (John 2:19). What was destroyed in the passion, was raised up in the resurrection, and it was the origin and foundation of all temples, about which the Apostle also speaks: You are the temple of God, and the Holy Spirit dwells in you (2 Corinthians VI, 16).
[AD 420] Jerome on Zechariah 1:14-16