2 John 1:11

ὁ γὰρ λέγων αὐτῷ χαίρειν κοινωνεῖ τοῖς ἔργοις αὐτοῦ τοῖς πονηροῖς.

o gar legōn aytō chairein koinōnei tois ergois aytoy tois ponērois.

King James Version (KJV)

For he that biddeth him God speed is partaker of his evil deeds.

Modern English

Anyone who welcomes them shares in their wicked work.