“Everyone transgressing and not abiding in the doctrine of Christ does not have God. The one abiding in the doctrine of Christ, this one has the Father and the Son. If anyone comes to you and does not bear this doctrine, do not receive him into the house, and do not speak a greeting to him. For the one speaking a greeting shares in his evil works” (2 John 9-11).
For a study on 2 John 11 see the following article:
Here are some Old Testament examples of the “greeting” that “shares in evil works”:
“And the serpent said to the woman, Dying you shall not die” (Genesis 3:4).
“And you have seen their detestable things, and their idols of wood and stone, silver and gold, which were among them; that there not be among you man, or woman, or family, or tribe, whose heart turns away today from Jehovah our God, to go and serve the gods of these nations; lest there should be among you today a root that bears gall and wormwood; and it happens when he hears the words of this curse, that he should bless himself in his heart, saying, I shall have peace, even though I walk in the stubbornness of my heart, to snatch away the drunken with the thirsty. Jehovah will not be willing to forgive him, for then Jehovah’s anger and His zeal shall smoke, and His zeal shall be against that man, and all the curses written in this book shall lie upon him. And Jehovah shall blot out his name from under the heavens” (Deuteronomy 29:17-20).
“So hear the Word of Jehovah, scornful men, rulers of this people in Jerusalem. Because you have said, We have cut a covenant with death; and, We have made a vision with Sheol, when the overwhelming rod passes through it will not come to us for we have made the lie our refuge, and we have hidden in falsehood. So, the Lord Jehovah says this: Behold, I place in Zion a Stone for a foundation, a tried Stone, a precious Cornerstone, a sure Foundation; he who believes shall not hasten. And I will lay justice for a line, and righteousness for a plummet; and the hail shall sweep away the refuge of the lie; and the waters shall overflow the hiding place. And your covenant with death shall be covered; and your vision with Sheol shall not rise up. When the overwhelming whip passes through, then you shall be for a trampling to it” (Isaiah 28:14-18).
“For the house of Israel and the house of Judah have been very devious with Me, declares Jehovah. They have lied against Jehovah and said, It is not He; and, No evil shall come on us; and, We shall not see sword or famine. And the prophets shall become wind, and the Word is not in them; so it shall be done to them. So Jehovah God of Hosts says this: Because you spoke this word, behold! I will make My Words fire in your mouth, and these people wood; and it shall consume them” (Jeremiah 5:11-14).
“For everyone from the least of them even to the greatest of them cuts off a profit. And from the prophet even to the priest, everyone deals falsely. They have also healed the break of My people slightly, saying, Peace, peace, when there is no peace. Were they ashamed when they made an abomination? They were not at all ashamed, nor did they know to blush. So they shall fall among those who fall. At the time I visit them, they shall be cast down, says Jehovah” (Jeremiah 6:13-15).
“How do you say, We are wise, and the Law of Jehovah is with us? Behold, the lying pen of the scribes has certainly worked deceit. The wise are ashamed; they are terrified and are captured. Behold, they have rejected the Word of Jehovah, and what wisdom is theirs? So I will give their wives to others, their fields to those who shall inherit. For everyone from the least even to the greatest cuts off a profit. From the prophet even to the priest, everyone deals falsely. For they have healed the hurt of the daughter of My people slightly, saying, Peace, peace! And there is no peace. Were they ashamed when they had done hateful things? They were not even at all ashamed, nor did they know how to blush. So they shall fall among those who fall. In the time of their punishment they will wither, says Jehovah. I will utterly consume them, says Jehovah. No grapes will be on the vine, or figs on the fig tree; even the leaf withers. And I will give to them those who pass over them” (Jeremiah 8:8-13).
“Then Jehovah said to me, Do not pray for good for this people. I will not listen to their cry when they fast; and when they offer burnt offering and food offering I will not accept them. But I will consume them by the sword, and by famine, and by the plague. Then I said, Ah, O Lord Jehovah! Behold, the prophets are saying to them, You shall not see the sword, nor shall you have famine, but I will give you true peace in this place. And Jehovah said to me, The prophets prophesy lies in My name. I did not send them and I have not commanded them, nor did I speak to them. They prophesy to you a false vision, and a worthless divination, and the deceit of their heart. So Jehovah says this concerning the prophets who prophesy in My name, and I did not send them; yet they say, Sword and famine shall not be in this land: By sword and famine those prophets shall be consumed. And the people to whom they prophesy shall be cast out in the streets of Jerusalem because of the famine and the sword. And none will bury them, either them, their wives, or their sons, or their daughters. For I will pour evil on them” (Jeremiah 14:11-16).
“So says Jehovah of Hosts, Do not listen to the words of the prophets who prophesy to you; they make you vain; they speak a vision of their own heart, not out of the mouth of Jehovah. They say to those who despise Me, Jehovah has said, You shall have peace. And they say to everyone who walks in the stubbornness of his own heart, Evil shall not come on you” (Jeremiah 23:16-17).
“And My hand shall be against the prophets who see vanity, and who divine a lie. They shall not be in the assembly of My people, and they shall not be written in the writing of the house of Israel, and they shall not enter into the land of Israel. And you shall know that I am the Lord Jehovah. Because, even because they made My people go astray, saying, Peace! and there was no peace. And he builds a wall, and, behold, others daubed it with lime. Say to those daubing with lime, Yea, it will fall. There will be a flooding rain; and you, O hailstones, shall fall, and a tempestuous wind shall break. And, behold, when the wall has fallen, it shall not be said to you, Where is the daubing with which you have daubed? So the Lord Jehovah says this: I will even break in My fury with a tempestuous wind. And there shall be a flooding rain in My anger, and hailstones in fury, to consume it. And I will break down the wall that you have daubed with lime and bring it down to the ground; yea, I will bare its base. And it shall fall, and you will be consumed in its midst. And you shall know that I am Jehovah. And I will complete My wrath in the wall, and in those who daubed it with lime. And I will say to you, The wall is not; and, Those who daubed are not. The prophets of Israel who are prophesying concerning Jerusalem, and who see visions of peace for her, even there is no peace, declares the Lord Jehovah” (Ezekiel 13:9-16).