Revelation 22:14–21 concludes the epilogue begun in verse 6. It contains promises, blessing, an invitation, a warning, and a benediction. The Old Testament closed with the promise that the sun of righteousness will arise with healing in its wings (Malachi 4:2). The New Testament closes with the promise that the ”bright and morning star” will come. Just as the morning star appears before the sun arises, so Jesus will come for the church before He returns to restore Israel to Himself.
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“Revelation 22:20” Bibleref.com
20 He who testifies these things says, “Yes, I come quickly.” Amen! Yes, come, Lord Jesus.