Don't count him as an enemy, but admonish him as a brother.
 I am perfectly persuaded that some of the most important parts of Satan's means of bringing about the apostasy are now actively at work. God has been graciously filling many hearts with joy and comfort of the truth. He has given not a few to believe these words, the moral signs of which are becoming daily more and more manifest. The apostasy again must come, and, in contrast with the man of righteousness, the man of sin be revealed, even the final Judas, "the son of perdition, who opposeth and exalteth himself above every one called God, or an object of veneration; so that he sitteth down in the temple of God, showing himself that he is God." How sharply in contrast with the Lord Jesus, who, though really God, in love became man, in order to accomplish the glorious counsels of God and man's salvation by grace! This one is the son of perdition to the ruin of those who trust him. Although he be but a man, and the man of sin, he takes the place of being the true God here on earth, and this too, not in the world, but in the temple of God of that time. Thus he not merely takes the place of God here below, but actually as such enters His temple. I do not doubt that the temple will then be in Jerusalem; so that as Christendom began at Jerusalem, the holy city will be its last scene of sinful pride and of divine judgment, though not its only place of judgment. Jerusalem! Rome! they are two names of most solemn import as to the subject to which I am briefly alluding. "Remember ye not that, when I was yet with you, I told you these things? And now ye know what withholdeth that he might be revealed in his time." It is no absolute restraint, but provision only; for he must be revealed in his own season.
