Ambrose of Milan

We have heard that the Lord Jesus not only judges but also punishes in the Spirit. For neither would he punish Antichrist, whom, as we read, "the Lord Jesus shall slay with the Spirit of his mouth," unless he had already judged him as fit for punishment … but the unity of the divine action remains undivided, since Christ cannot be separated from the Spirit, nor the Spirit act apart from Christ. For the unity of the divine nature cannot be divided.