Revelation 3:19 in the King James Version
As many as I love, I rebuke and chasten: be zealous therefore, and repent.
Context
18 I counsel you to buy from me gold refined by fire, that you may become rich; and white garments, that you may clothe yourself, and that the shame of your nakedness may not be revealed; and eye salve to anoint your eyes, that you may see.
19 As many as I love, I reprove and chasten. Be zealous therefore, and repent.
20 Behold, I stand at the door and knock. If anyone hears my voice and opens the door, then I will come in to him and will dine with him, and he with me.