2 John 1:11
For he that biddeth him God speed is partaker of his evil deeds.
Cross-reference
In 2 John 1:10, the command to not receive or greet false teachers is given; verse 11 then explains that greeting makes one share in their evil — direct sequential link.
Ephesians 5:11 forbids participating in darkness — a direct parallel to not sharing in false teachers' wicked works.
1 Timothy 5:22 warns against sharing in others' sins, reinforcing the principle of avoiding complicity through association.
Revelation 18:4 calls God's people to separate from Babylon to avoid sharing her sins — same logic of not participating in evil.
In 1 Kings 22:4, Jehoshaphat allies with Ahab, showing how association with the wicked shares in their deeds — parallel to the warning against greeting false teachers.
In 2 Chronicles 18:3, Jehoshaphat pledges to join Ahab in battle, illustrating complicity through alliance — echoes the principle of not partaking in evil works.
In 2 Chronicles 19:2, Jehu rebukes Jehoshaphat for helping the wicked, directly stating such alliance brings wrath — reinforcing the warning in 2 John.
In Romans 16:17, Paul commands to watch out for and avoid those causing divisions contrary to doctrine — directly parallel to the command to not greet false teachers.
In Ezra 9:12, Israel is forbidden to intermarry or seek peace with pagans to avoid corruption — similar separation principle to not greeting false teachers.
In Matthew 18:17, an unrepentant brother is to be treated as an outsider — a form of separation that parallels avoiding fellowship with false teachers.
Leviticus 19:17 urges rebuking a neighbor to not bear sin — a different approach but shares the concern of avoiding complicity.