Revelation 3:19

Ἐγὼ ὅσους ἐὰν φιλῶ, ἐλέγχω καὶ παιδεύω· ζήλωσον οὖν καὶ μετανόησον.

Egō osoys ean philō, elegchō kai paideyō· zēlōson oyn kai metanoēson.

King James Version (KJV)

As many as I love, I rebuke and chasten: be zealous therefore, and repent.

Modern English

Those whom I love I rebuke and discipline. So be earnest and repent.